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Message boards : Prime Sierpinski Problem : 168451*2^19375200+1 is prime!

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Profile Michael GoetzProject donor
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Joined: 21 Jan 10
Posts: 13625
ID: 53948
Credit: 274,643,588
RAC: 244,710
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 PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 2 primes in the 2021 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,132,712)Cullen LLR Ruby: Earned 2,000,000 credits (3,907,849)ESP LLR Turquoise: Earned 5,000,000 credits (5,021,269)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Sapphire: Earned 20,000,000 credits (20,751,038)PSP LLR Turquoise: Earned 5,000,000 credits (5,197,957)SoB LLR Sapphire: Earned 20,000,000 credits (36,067,618)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,718,606)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Ruby: Earned 2,000,000 credits (2,963,361)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,061,196)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (22,885,121)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 Jade: Earned 10,000,000 credits (10,118,303)WW Sapphire: Earned 20,000,000 credits (28,916,000)GFN Emerald: Earned 50,000,000 credits (77,916,132)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 110460 - Posted: 26 Sep 2017 | 15:10:15 UTC

... and thus the 2nd k in a year is eliminated from the Prime Sierpinski Problem. 9 k's remain, including 22699 and 67607 which are being searched as part of the Seventeen or Bust project.

(Last year's SoB prime eliminated a k which was prime, so it was part of both SoB and PSP.)


____________
My lucky number is 75898524288+1

rvoskoboynikov
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Joined: 4 May 17
Posts: 55
ID: 865286
Credit: 85,249,852
RAC: 0
Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Silver: Earned 100,000 credits (302,653)Cullen LLR Silver: Earned 100,000 credits (174,572)ESP LLR Silver: Earned 100,000 credits (121,328)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (341,146)PPS LLR Jade: Earned 10,000,000 credits (11,181,202)PSP LLR Gold: Earned 500,000 credits (512,476)SoB LLR Ruby: Earned 2,000,000 credits (2,143,146)SR5 LLR Silver: Earned 100,000 credits (264,543)SGS LLR Ruby: Earned 2,000,000 credits (2,021,102)TRP LLR Silver: Earned 100,000 credits (366,858)Woodall LLR Silver: Earned 100,000 credits (217,132)321 Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,208,792)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (656,417)PPS Sieve Jade: Earned 10,000,000 credits (10,099,516)AP 26/27 Jade: Earned 10,000,000 credits (10,948,444)GFN Sapphire: Earned 20,000,000 credits (39,667,304)PSA Turquoise: Earned 5,000,000 credits (5,023,220)
Message 110467 - Posted: 26 Sep 2017 | 16:29:35 UTC - in response to Message 110460.

Congrats to the discoverer!

Profile JeppeSNProject donor
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Joined: 5 Apr 14
Posts: 1502
ID: 306875
Credit: 33,914,342
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Found 1 prime in the 2020 Tour de Primes321 LLR Gold: Earned 500,000 credits (529,293)Cullen LLR Gold: Earned 500,000 credits (611,298)ESP LLR Silver: Earned 100,000 credits (139,922)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (35,236)PPS LLR Jade: Earned 10,000,000 credits (12,051,306)PSP LLR Silver: Earned 100,000 credits (212,242)SoB LLR Silver: Earned 100,000 credits (466,812)SR5 LLR Silver: Earned 100,000 credits (145,419)SGS LLR Silver: Earned 100,000 credits (112,277)TRP LLR Silver: Earned 100,000 credits (342,501)Woodall LLR Silver: Earned 100,000 credits (109,455)321 Sieve (suspended) Silver: Earned 100,000 credits (175,037)PPS Sieve Bronze: Earned 10,000 credits (10,113)AP 26/27 Bronze: Earned 10,000 credits (12,129)WW Turquoise: Earned 5,000,000 credits (9,640,000)GFN Amethyst: Earned 1,000,000 credits (1,707,013)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 110477 - Posted: 26 Sep 2017 | 20:54:13 UTC - in response to Message 110467.

Congrats to the discoverer!


Congratulations to user paleseptember. /JeppeSN

Profile paleseptember
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Joined: 11 Jun 08
Posts: 17
ID: 23985
Credit: 246,235,865
RAC: 93,033
Discovered 1 mega primeEliminated 1 conjecture "k"321 LLR Amethyst: Earned 1,000,000 credits (1,276,221)Cullen LLR Amethyst: Earned 1,000,000 credits (1,767,319)ESP LLR Ruby: Earned 2,000,000 credits (2,339,008)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,257,568)PPS LLR Ruby: Earned 2,000,000 credits (2,022,881)PSP LLR Gold: Earned 500,000 credits (640,167)SoB LLR Ruby: Earned 2,000,000 credits (2,729,127)SR5 LLR Amethyst: Earned 1,000,000 credits (1,002,779)SGS LLR Amethyst: Earned 1,000,000 credits (1,075,510)TRP LLR Ruby: Earned 2,000,000 credits (2,187,862)Woodall LLR Ruby: Earned 2,000,000 credits (2,029,885)321 Sieve (suspended) Ruby: Earned 2,000,000 credits (2,207,784)Generalized Cullen/Woodall Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,047,973)PPS Sieve Double Bronze: Earned 100,000,000 credits (101,450,245)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (56,838)TRP Sieve (suspended) Gold: Earned 500,000 credits (809,757)AP 26/27 Emerald: Earned 50,000,000 credits (57,588,492)GFN Emerald: Earned 50,000,000 credits (61,271,950)PSA Amethyst: Earned 1,000,000 credits (1,472,680)
Message 110482 - Posted: 27 Sep 2017 | 8:31:51 UTC - in response to Message 110477.

Hooray! That's quite exciting :)

Brook HarsteProject donor
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Joined: 30 Nov 08
Posts: 1347
ID: 32401
Credit: 805,483,198
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Discovered 2 mega primesFound 1 prime in the 2019 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (10,334,077)Cullen LLR Turquoise: Earned 5,000,000 credits (5,010,955)ESP LLR Turquoise: Earned 5,000,000 credits (7,439,418)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,501,906)PPS LLR Sapphire: Earned 20,000,000 credits (26,697,006)PSP LLR Turquoise: Earned 5,000,000 credits (6,184,417)SoB LLR Jade: Earned 10,000,000 credits (12,120,365)SR5 LLR Turquoise: Earned 5,000,000 credits (9,234,440)SGS LLR Turquoise: Earned 5,000,000 credits (5,201,403)TRP LLR Turquoise: Earned 5,000,000 credits (5,628,223)Woodall LLR Turquoise: Earned 5,000,000 credits (5,061,985)321 Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,027,534)Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (17,370,919)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,014,372)PPS Sieve Double Bronze: Earned 100,000,000 credits (129,430,775)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,083,315)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,629,248)AP 26/27 Emerald: Earned 50,000,000 credits (56,876,924)GFN Double Silver: Earned 200,000,000 credits (286,079,854)PSA Double Silver: Earned 200,000,000 credits (200,556,062)
Message 110495 - Posted: 27 Sep 2017 | 17:07:53 UTC - in response to Message 110482.

Hooray! That's quite exciting :)

Monumental! Congrats!

If I find one this big I will get it printed on a poster with a microscopic font. I seen a Mersenne printed out once like that. You needed a loupe to view it.

Message boards : Prime Sierpinski Problem : 168451*2^19375200+1 is prime!

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