PrimeGrid
Please visit donation page to help the project cover running costs for this month

Toggle Menu

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise

Advanced search

Message boards : Project Staging Area : New Factorial

Author Message
rogue
Volunteer developer
Avatar
Send message
Joined: 8 Sep 07
Posts: 1195
ID: 12001
Credit: 18,565,548
RAC: 0
PPS LLR Bronze: Earned 10,000 credits (31,229)PSA Jade: Earned 10,000,000 credits (18,533,435)
Message 97231 - Posted: 27 Jul 2016 | 0:06:22 UTC

It looks to me that PrimeGrid got poached: http://primes.utm.edu/primes/page.php?id=121944.

Unless the searcher was really lucky or had many, many cores.

Profile Crun-chiProject donor
Volunteer tester
Avatar
Send message
Joined: 25 Nov 09
Posts: 2975
ID: 50683
Credit: 56,737,172
RAC: 21,115
Eliminated 1 conjecture "k"Found 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de Primes321 LLR Silver: Earned 100,000 credits (229,492)Cullen LLR Silver: Earned 100,000 credits (110,733)PPS LLR Turquoise: Earned 5,000,000 credits (5,805,565)PSP LLR Silver: Earned 100,000 credits (104,385)SoB LLR Silver: Earned 100,000 credits (106,117)SR5 LLR Silver: Earned 100,000 credits (139,802)SGS LLR Amethyst: Earned 1,000,000 credits (1,325,207)TRP LLR Gold: Earned 500,000 credits (626,755)Woodall LLR Silver: Earned 100,000 credits (122,944)321 Sieve Silver: Earned 100,000 credits (104,900)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,599)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (515,556)PPS Sieve Jade: Earned 10,000,000 credits (11,855,975)TRP Sieve (suspended) Silver: Earned 100,000 credits (255,612)AP 26/27 Ruby: Earned 2,000,000 credits (2,583,960)GFN Sapphire: Earned 20,000,000 credits (23,334,026)PSA Turquoise: Earned 5,000,000 credits (7,522,050)
Message 97246 - Posted: 27 Jul 2016 | 8:20:05 UTC - in response to Message 97231.

It look like he found it alone... there is no Primegrid in" his prime"
____________
314187728^131072+1 GENERALIZED FERMAT :)
93*10^1029523-1 REPDIGIT PRIME
31*332^367560+1 CRUS PRIME
Proud member of team Aggie The Pew. Go Aggie!

unconnected
Volunteer tester
Send message
Joined: 4 Apr 09
Posts: 94
ID: 37970
Credit: 313,448,020
RAC: 19,477
Discovered the World's First base 121 Generalized Woodall prime!!!Eliminated 1 conjecture "k"321 LLR Jade: Earned 10,000,000 credits (17,415,188)Cullen LLR Jade: Earned 10,000,000 credits (10,637,369)ESP LLR Turquoise: Earned 5,000,000 credits (8,666,161)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (6,631,688)PPS LLR Sapphire: Earned 20,000,000 credits (25,154,083)PSP LLR Jade: Earned 10,000,000 credits (11,349,641)SoB LLR Sapphire: Earned 20,000,000 credits (20,731,142)SR5 LLR Jade: Earned 10,000,000 credits (10,325,270)SGS LLR Turquoise: Earned 5,000,000 credits (7,398,542)TRP LLR Jade: Earned 10,000,000 credits (18,657,008)Woodall LLR Jade: Earned 10,000,000 credits (13,074,492)321 Sieve Amethyst: Earned 1,000,000 credits (1,571,835)Cullen/Woodall Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,300,282)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,507,840)PPS Sieve Jade: Earned 10,000,000 credits (14,932,890)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,114,568)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,917,732)AP 26/27 Ruby: Earned 2,000,000 credits (2,264,111)GFN Emerald: Earned 50,000,000 credits (61,954,241)PSA Emerald: Earned 50,000,000 credits (62,844,629)
Message 97250 - Posted: 27 Jul 2016 | 11:05:22 UTC - in response to Message 97246.

The second biggest factorial prime (http://primes.utm.edu/primes/page.php?id=102627) was also found outside of Primegrid.

HonzaProject donor
Volunteer moderator
Volunteer tester
Project scientist
Send message
Joined: 15 Aug 05
Posts: 1881
ID: 352
Credit: 3,028,324,988
RAC: 1,111,638
Discovered 7 mega primesEliminated 4 conjecture "k"sFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes largest primeFound 4 primes in the 2019 Tour de PrimesFound 1 mega prime in the 2019 Tour de PrimesFound 1 prime in the 2019 Tour de Primes Mountain StageFound 1 prime in the 2020 Tour de Primes321 LLR Emerald: Earned 50,000,000 credits (74,738,778)Cullen LLR Emerald: Earned 50,000,000 credits (50,296,190)ESP LLR Emerald: Earned 50,000,000 credits (50,853,190)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (50,309,119)PPS LLR Double Bronze: Earned 100,000,000 credits (118,849,772)PSP LLR Emerald: Earned 50,000,000 credits (50,563,867)SoB LLR Double Bronze: Earned 100,000,000 credits (101,502,109)SR5 LLR Double Bronze: Earned 100,000,000 credits (101,883,529)SGS LLR Emerald: Earned 50,000,000 credits (53,154,727)TPS LLR (retired) Bronze: Earned 10,000 credits (43,033)TRP LLR Double Bronze: Earned 100,000,000 credits (100,338,924)Woodall LLR Emerald: Earned 50,000,000 credits (50,956,094)321 Sieve Double Bronze: Earned 100,000,000 credits (115,948,450)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,142,109)Generalized Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (50,504,945)PPS Sieve Double Gold: Earned 500,000,000 credits (513,057,580)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,288,222)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,149,354)AP 26/27 Double Silver: Earned 200,000,000 credits (232,724,773)GFN Double Gold: Earned 500,000,000 credits (732,775,109)PSA Double Gold: Earned 500,000,000 credits (535,232,795)
Message 97260 - Posted: 27 Jul 2016 | 18:47:48 UTC - in response to Message 97231.

It looks to me that PrimeGrid got poached: http://primes.utm.edu/primes/page.php?id=121944.


Yeah, front-running...considering leading edge on PRPNet is ~204k and this one is 208003! - 1
Doing about 50 tests a day, we would have been there in under 3 months.
(during last year 2-weeks challenge, we have done almost 9000 test, it would have bring us there)

And lucky that this one is just megaprime (1015843 digits).
Perhaps Sou Fukui started the range from first megaprime factorial candidates and got lucky quite soon.


____________
My stats
Badge score: 1*1 + 5*1 + 8*3 + 9*11 + 10*1 + 11*1 + 12*3 = 186

JimBProject donor
Honorary cruncher
Send message
Joined: 4 Aug 11
Posts: 916
ID: 107307
Credit: 974,216,214
RAC: 3,557
Discovered 1 mega prime321 LLR Ruby: Earned 2,000,000 credits (2,691,081)Cullen LLR Turquoise: Earned 5,000,000 credits (5,031,868)ESP LLR Turquoise: Earned 5,000,000 credits (5,064,082)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,038,750)PPS LLR Turquoise: Earned 5,000,000 credits (5,000,220)PSP LLR Turquoise: Earned 5,000,000 credits (7,674,374)SoB LLR Sapphire: Earned 20,000,000 credits (42,604,648)SR5 LLR Jade: Earned 10,000,000 credits (11,829,173)SGS LLR Ruby: Earned 2,000,000 credits (2,132,889)TRP LLR Ruby: Earned 2,000,000 credits (2,291,092)Woodall LLR Turquoise: Earned 5,000,000 credits (5,046,412)321 Sieve Jade: Earned 10,000,000 credits (10,057,614)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,002,919)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,005,451)PPS Sieve Emerald: Earned 50,000,000 credits (52,042,965)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,341,676)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,070,804)AP 26/27 Jade: Earned 10,000,000 credits (10,742,251)GFN Emerald: Earned 50,000,000 credits (50,000,251)PSA Double Gold: Earned 500,000,000 credits (728,547,693)
Message 97262 - Posted: 27 Jul 2016 | 19:32:20 UTC

By the way, that finder is our (former?) user Corticarte, as can easily be ascertained by looking at one of his older primes and matching it to the PrimeGrid Primes by Project listing.

Steve
Send message
Joined: 14 Apr 07
Posts: 154
ID: 7216
Credit: 191,553,531
RAC: 0
Discovered 1 mega prime321 LLR Amethyst: Earned 1,000,000 credits (1,022,303)Cullen LLR Amethyst: Earned 1,000,000 credits (1,152,153)ESP LLR Ruby: Earned 2,000,000 credits (2,286,437)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,005,468)PPS LLR Turquoise: Earned 5,000,000 credits (5,037,509)PSP LLR Amethyst: Earned 1,000,000 credits (1,059,137)SoB LLR Amethyst: Earned 1,000,000 credits (1,617,996)SR5 LLR Turquoise: Earned 5,000,000 credits (5,032,314)SGS LLR Gold: Earned 500,000 credits (539,352)TRP LLR Amethyst: Earned 1,000,000 credits (1,010,985)Woodall LLR Gold: Earned 500,000 credits (510,566)321 Sieve Bronze: Earned 10,000 credits (86,604)Generalized Cullen/Woodall Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,672,261)PPS Sieve Sapphire: Earned 20,000,000 credits (20,037,224)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,001,291)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,000,182)AP 26/27 Turquoise: Earned 5,000,000 credits (5,049,707)GFN Sapphire: Earned 20,000,000 credits (33,434,399)PSA Double Bronze: Earned 100,000,000 credits (107,997,620)
Message 97264 - Posted: 27 Jul 2016 | 19:38:43 UTC - in response to Message 97262.

By the way, that finder is our (former?) user Corticarte, as can easily be ascertained by looking at one of his older primes and matching it to the PrimeGrid Primes by Project listing.

or easier with his prime list

LMarc
Send message
Joined: 8 Aug 11
Posts: 11
ID: 107691
Credit: 18,247,763
RAC: 0
321 LLR Silver: Earned 100,000 credits (174,988)Cullen LLR Gold: Earned 500,000 credits (509,613)ESP LLR Silver: Earned 100,000 credits (141,125)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (596,182)PPS LLR Bronze: Earned 10,000 credits (41,630)PSP LLR Silver: Earned 100,000 credits (450,486)SoB LLR Amethyst: Earned 1,000,000 credits (1,629,387)SR5 LLR Bronze: Earned 10,000 credits (90,936)TRP LLR Silver: Earned 100,000 credits (110,480)Woodall LLR Amethyst: Earned 1,000,000 credits (1,619,927)PSA Jade: Earned 10,000,000 credits (12,858,194)
Message 97356 - Posted: 31 Jul 2016 | 4:21:15 UTC

This is the second time in a row we got beaten (the two largest factorial primes are outside primegrid). We are plowing nice and predictable forward (bottom up) in the years. We see other people using different approaches and being more successful.

should we change tactics?

i.e. work top down for a block of numbers in stead of bottom up?
or use a combination (alternating) with one bottom up number coming from the server and than one top down (working our way to set of numbers in a pincer movement)?

off course we still can (and should not be willing) to prevent to search outsiders outside our tested range. but at least we make the stakes a little higher for outsiders and increase our changes of finding a world largest factorial prime

kind regards
Leon


HonzaProject donor
Volunteer moderator
Volunteer tester
Project scientist
Send message
Joined: 15 Aug 05
Posts: 1881
ID: 352
Credit: 3,028,324,988
RAC: 1,111,638
Discovered 7 mega primesEliminated 4 conjecture "k"sFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes largest primeFound 4 primes in the 2019 Tour de PrimesFound 1 mega prime in the 2019 Tour de PrimesFound 1 prime in the 2019 Tour de Primes Mountain StageFound 1 prime in the 2020 Tour de Primes321 LLR Emerald: Earned 50,000,000 credits (74,738,778)Cullen LLR Emerald: Earned 50,000,000 credits (50,296,190)ESP LLR Emerald: Earned 50,000,000 credits (50,853,190)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (50,309,119)PPS LLR Double Bronze: Earned 100,000,000 credits (118,849,772)PSP LLR Emerald: Earned 50,000,000 credits (50,563,867)SoB LLR Double Bronze: Earned 100,000,000 credits (101,502,109)SR5 LLR Double Bronze: Earned 100,000,000 credits (101,883,529)SGS LLR Emerald: Earned 50,000,000 credits (53,154,727)TPS LLR (retired) Bronze: Earned 10,000 credits (43,033)TRP LLR Double Bronze: Earned 100,000,000 credits (100,338,924)Woodall LLR Emerald: Earned 50,000,000 credits (50,956,094)321 Sieve Double Bronze: Earned 100,000,000 credits (115,948,450)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,142,109)Generalized Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (50,504,945)PPS Sieve Double Gold: Earned 500,000,000 credits (513,057,580)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,288,222)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,149,354)AP 26/27 Double Silver: Earned 200,000,000 credits (232,724,773)GFN Double Gold: Earned 500,000,000 credits (732,775,109)PSA Double Gold: Earned 500,000,000 credits (535,232,795)
Message 97357 - Posted: 31 Jul 2016 | 7:52:48 UTC - in response to Message 97356.
Last modified: 31 Jul 2016 | 7:53:21 UTC

This is the second time in a row we got beaten (the two largest factorial primes are outside primegrid). We are plowing nice and predictable forward (bottom up) in the years. We see other people using different approaches and being more successful.

should we change tactics?


If it was easy, we could have moved Factorial to BOINC, make it another subproject and another badge.
Solely PG's BOINC user base hunting for badges would bring factorial so far (dozen thousands of tests) that it would almost inevitably yield a prime...largest known one.

(see Genefer for example)

Yeah, it is a shame being beaten twice in the same manner...with a low participationas rate, it is expected.
____________
My stats
Badge score: 1*1 + 5*1 + 8*3 + 9*11 + 10*1 + 11*1 + 12*3 = 186

LMarc
Send message
Joined: 8 Aug 11
Posts: 11
ID: 107691
Credit: 18,247,763
RAC: 0
321 LLR Silver: Earned 100,000 credits (174,988)Cullen LLR Gold: Earned 500,000 credits (509,613)ESP LLR Silver: Earned 100,000 credits (141,125)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (596,182)PPS LLR Bronze: Earned 10,000 credits (41,630)PSP LLR Silver: Earned 100,000 credits (450,486)SoB LLR Amethyst: Earned 1,000,000 credits (1,629,387)SR5 LLR Bronze: Earned 10,000 credits (90,936)TRP LLR Silver: Earned 100,000 credits (110,480)Woodall LLR Amethyst: Earned 1,000,000 credits (1,619,927)PSA Jade: Earned 10,000,000 credits (12,858,194)
Message 97361 - Posted: 31 Jul 2016 | 12:11:31 UTC - in response to Message 97357.

For me the relative low amount of participants in this search is a given
I am just contemplating that we could change our tactics as a small group of searchers to increase our changes of finding an world leading prime and still work properly that do not leave any gaps in the search

i.e. search from 250K down to the current leading edge.
and than search downwards from 300K to 250K

kind regards
leon

Profile JeppeSNProject donor
Avatar
Send message
Joined: 5 Apr 14
Posts: 1265
ID: 306875
Credit: 17,620,887
RAC: 35,030
Found 1 prime in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (529,293)Cullen LLR Bronze: Earned 10,000 credits (98,851)ESP LLR Silver: Earned 100,000 credits (139,922)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (35,236)PPS LLR Turquoise: Earned 5,000,000 credits (7,877,017)PSP LLR Silver: Earned 100,000 credits (212,242)SoB LLR Silver: Earned 100,000 credits (237,390)SR5 LLR Silver: Earned 100,000 credits (145,419)SGS LLR Silver: Earned 100,000 credits (104,534)TRP LLR Silver: Earned 100,000 credits (342,501)Woodall LLR Silver: Earned 100,000 credits (109,455)321 Sieve Silver: Earned 100,000 credits (175,037)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 97365 - Posted: 31 Jul 2016 | 21:50:24 UTC - in response to Message 97361.

For me the relative low amount of participants in this search is a given
I am just contemplating that we could change our tactics as a small group of searchers to increase our changes of finding an world leading prime and still work properly that do not leave any gaps in the search

i.e. search from 250K down to the current leading edge.
and than search downwards from 300K to 250K


Are you sure that would increase our chances to find a world record prime? How?

People searching without using PrimeGrid's (PRPNet) server could still do the same amount of work, and they could still predict where we would be searching.

/JeppeSN

Message boards : Project Staging Area : New Factorial

[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2020 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 0.60, 1.13, 1.61
Generated 21 Oct 2020 | 5:29:52 UTC