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

Sponsored by:

Hosted at and sponsored by Rackspace.

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise

Advanced search

Message boards : News : PPS-Mega Prime!

Author Message
Van ZimmermanProject donor
Volunteer moderator
Project administrator
Volunteer tester
Project scientist
Send message
Joined: 30 Aug 12
Posts: 1865
ID: 168418
Credit: 4,948,471,956
RAC: 1,353,729
Discovered the World's First GFN-20 prime!!!Discovered 2 mega primesFound 1 prime in the 2018 Tour de Primes321 LLR Sapphire: Earned 20,000,000 credits (20,089,185)Cullen LLR Jade: Earned 10,000,000 credits (15,483,829)ESP LLR Sapphire: Earned 20,000,000 credits (20,089,407)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (20,037,992)PPS LLR Sapphire: Earned 20,000,000 credits (20,982,519)PSP LLR Sapphire: Earned 20,000,000 credits (20,117,197)SoB LLR Sapphire: Earned 20,000,000 credits (21,208,789)SR5 LLR Jade: Earned 10,000,000 credits (17,261,207)SGS LLR Jade: Earned 10,000,000 credits (14,134,778)TRP LLR Sapphire: Earned 20,000,000 credits (20,619,871)Woodall LLR Jade: Earned 10,000,000 credits (16,927,546)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,326,839)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,051,222,753)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,189,695)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,102,079)AP 26/27 Emerald: Earned 50,000,000 credits (51,669,540)GFN Double Ruby: Earned 2,000,000,000 credits (3,410,912,245)PSA Double Bronze: Earned 100,000,000 credits (187,094,621)
Message 112753 - Posted: 29 Dec 2017 | 13:08:00 UTC

On 28 December 2017, 05:55:36 UTC, PrimeGrid’s PPS Mega Prime Search project found the Mega Prime:
1155*2^3455254+1

The prime is 1,040,139 digits long and will enter Chris Caldwell's The Largest Known Primes Database ranked 209th overall.

The discovery was made by Josh Closs (Josh Closs) of the United States using an Intel(R) Core(TM) i5-6400 CPU @ 2.70GHz with 16GB RAM, running Microsoft Windows 10 Core Edition. This computer took about 57 minutes to complete the primality test using LLR. Josh is a member of the Crunch Squad team.

The prime was verified on 29 December 2017, 12:08:17 UTC by Howard Gordon ([PST]Howard) of the United Kingdom using an AMD Ryzen 7 1800X CPU with 16GB RAM, running Microsoft Windows 10 Core Edition. This computer took about 1 hour 30 minutes to complete the primality test using LLR. Howard is a member of the PrimeSearchTeam team.

For more details, please see the official announcement.

Profile Luigi R.Project donor
Avatar
Send message
Joined: 11 Feb 14
Posts: 91
ID: 297455
Credit: 18,422,674
RAC: 15
321 LLR Bronze: Earned 10,000 credits (77,701)Cullen LLR Silver: Earned 100,000 credits (113,279)ESP LLR Bronze: Earned 10,000 credits (18,290)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (96,108)PPS LLR Ruby: Earned 2,000,000 credits (2,371,996)PSP LLR Silver: Earned 100,000 credits (172,629)SoB LLR Amethyst: Earned 1,000,000 credits (1,232,066)SR5 LLR Bronze: Earned 10,000 credits (16,223)SGS LLR Silver: Earned 100,000 credits (133,431)TRP LLR Bronze: Earned 10,000 credits (21,057)Woodall LLR Silver: Earned 100,000 credits (100,235)Generalized Cullen/Woodall Sieve Silver: Earned 100,000 credits (115,766)PPS Sieve Jade: Earned 10,000,000 credits (11,225,430)TRP Sieve (suspended) Silver: Earned 100,000 credits (108,608)AP 26/27 Amethyst: Earned 1,000,000 credits (1,014,793)GFN Amethyst: Earned 1,000,000 credits (1,605,062)
Message 112754 - Posted: 29 Dec 2017 | 14:31:30 UTC

Wow, he discovered a PPS-Mega prime after at most 120 tasks. Congratulations!

Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Project scientist
Avatar
Send message
Joined: 21 Jan 10
Posts: 11012
ID: 53948
Credit: 137,206,155
RAC: 95,878
The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,381,937)Cullen LLR Amethyst: Earned 1,000,000 credits (1,157,331)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,789,310)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Jade: Earned 10,000,000 credits (16,555,420)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Amethyst: Earned 1,000,000 credits (1,680,461)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,145,077)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,085,723)PPS Sieve Sapphire: Earned 20,000,000 credits (20,104,046)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (5,885,282)GFN Emerald: Earned 50,000,000 credits (51,559,441)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 112755 - Posted: 29 Dec 2017 | 15:23:01 UTC - in response to Message 112754.

Wow, he discovered a PPS-Mega prime after at most 120 tasks. Congratulations!


156 as of right now, including PPS, PPSE, and, of course, PPS-MEGA.

Truly a lucky guy, but it does happen sometimes...

https://primes.utm.edu/primes/page.php?id=103235

At the time that prime was discovered, it was the largest known GFN, the first ever n=19 GFN, and the 13th largest known prime.

It was my 16th GFN-19 task. I had only started running GFN-18 5 days earlier, and then switched after two days to GFN-19 as a result of this forum post by John. So it took all of 3 days to find. :)

____________
Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

My lucky number is 75898^524288+1

Profile Luigi R.Project donor
Avatar
Send message
Joined: 11 Feb 14
Posts: 91
ID: 297455
Credit: 18,422,674
RAC: 15
321 LLR Bronze: Earned 10,000 credits (77,701)Cullen LLR Silver: Earned 100,000 credits (113,279)ESP LLR Bronze: Earned 10,000 credits (18,290)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (96,108)PPS LLR Ruby: Earned 2,000,000 credits (2,371,996)PSP LLR Silver: Earned 100,000 credits (172,629)SoB LLR Amethyst: Earned 1,000,000 credits (1,232,066)SR5 LLR Bronze: Earned 10,000 credits (16,223)SGS LLR Silver: Earned 100,000 credits (133,431)TRP LLR Bronze: Earned 10,000 credits (21,057)Woodall LLR Silver: Earned 100,000 credits (100,235)Generalized Cullen/Woodall Sieve Silver: Earned 100,000 credits (115,766)PPS Sieve Jade: Earned 10,000,000 credits (11,225,430)TRP Sieve (suspended) Silver: Earned 100,000 credits (108,608)AP 26/27 Amethyst: Earned 1,000,000 credits (1,014,793)GFN Amethyst: Earned 1,000,000 credits (1,605,062)
Message 112759 - Posted: 29 Dec 2017 | 16:17:19 UTC

I'm so envious of you. :D

JeppeSNProject donor
Send message
Joined: 5 Apr 14
Posts: 692
ID: 306875
Credit: 8,706,220
RAC: 10,132
321 LLR Bronze: Earned 10,000 credits (48,835)ESP LLR Bronze: Earned 10,000 credits (13,226)PPS LLR Gold: Earned 500,000 credits (866,007)SoB LLR Silver: Earned 100,000 credits (132,293)SR5 LLR Bronze: Earned 10,000 credits (16,010)TRP LLR Bronze: Earned 10,000 credits (14,746)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 113270 - Posted: 12 Jan 2018 | 16:05:43 UTC

He was also lucky finding it before New Year (28 Dec) so that the old announcement policy applied. The first megaprime which is not officially announced, is 48273828^131072+1 (Johnny Rotten, 09 Jan). /JeppeSN

Profile Luigi R.Project donor
Avatar
Send message
Joined: 11 Feb 14
Posts: 91
ID: 297455
Credit: 18,422,674
RAC: 15
321 LLR Bronze: Earned 10,000 credits (77,701)Cullen LLR Silver: Earned 100,000 credits (113,279)ESP LLR Bronze: Earned 10,000 credits (18,290)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (96,108)PPS LLR Ruby: Earned 2,000,000 credits (2,371,996)PSP LLR Silver: Earned 100,000 credits (172,629)SoB LLR Amethyst: Earned 1,000,000 credits (1,232,066)SR5 LLR Bronze: Earned 10,000 credits (16,223)SGS LLR Silver: Earned 100,000 credits (133,431)TRP LLR Bronze: Earned 10,000 credits (21,057)Woodall LLR Silver: Earned 100,000 credits (100,235)Generalized Cullen/Woodall Sieve Silver: Earned 100,000 credits (115,766)PPS Sieve Jade: Earned 10,000,000 credits (11,225,430)TRP Sieve (suspended) Silver: Earned 100,000 credits (108,608)AP 26/27 Amethyst: Earned 1,000,000 credits (1,014,793)GFN Amethyst: Earned 1,000,000 credits (1,605,062)
Message 113325 - Posted: 14 Jan 2018 | 13:47:11 UTC

Yeah, it was the megaprime that some of us had been searching on December before the change of announcement policy. Now PPS megaprimes are not of interest to get PDF announcements. The recent badge idea is nice though.

I did ~3000 "megatests" between PPS and GFN17 on December, but nothing came out.

Post to thread

Message boards : News : PPS-Mega Prime!

[Return to PrimeGrid main page]
Copyright © 2005 - 2018 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 1.49, 1.74, 1.59
Generated 18 Aug 2018 | 14:48:57 UTC