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Message boards : News : Factorial Prime Found!

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Scott BrownProject donor
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Joined: 17 Oct 05
Posts: 2179
ID: 1178
Credit: 9,029,129,920
RAC: 13,557,828
Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 27 mega primesEliminated 7 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 2 Fermat divisors2012 Tour de Primes highest prime count2012 Tour de Primes most Mountain Stage primes2015 Tour de Primes highest prime count2016 Tour de Primes highest prime countFound 23 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 2 primes in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes highest prime countFound 22 primes in the 2019 Tour de Primes2020 Tour de Primes highest prime scoreFound 21 primes in the 2020 Tour de PrimesFound 4 mega primes in the 2020 Tour de Primes321 LLR Double Silver: Earned 200,000,000 credits (201,403,028)Cullen LLR Double Silver: Earned 200,000,000 credits (201,384,771)ESP LLR Double Silver: Earned 200,000,000 credits (203,249,784)Generalized Cullen/Woodall LLR Double Bronze: Earned 100,000,000 credits (109,580,172)PPS LLR Double Gold: Earned 500,000,000 credits (665,185,363)PSP LLR Double Bronze: Earned 100,000,000 credits (126,982,721)SoB LLR Double Bronze: Earned 100,000,000 credits (135,747,083)SR5 LLR Double Silver: Earned 200,000,000 credits (214,194,272)SGS LLR Double Silver: Earned 200,000,000 credits (201,593,629)TPS LLR (retired) Silver: Earned 100,000 credits (235,439)TRP LLR Double Silver: Earned 200,000,000 credits (201,215,056)Woodall LLR Double Bronze: Earned 100,000,000 credits (101,447,725)321 Sieve (suspended) Double Silver: Earned 200,000,000 credits (235,451,253)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve (suspended) Double Silver: Earned 200,000,000 credits (285,139,652)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,728,919,768)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Double Silver: Earned 200,000,000 credits (203,523,358)TRP Sieve (suspended) Double Silver: Earned 200,000,000 credits (201,489,157)AP 26/27 Double Silver: Earned 200,000,000 credits (385,720,907)WW Double Silver: Earned 200,000,000 credits (292,640,000)GFN Double Amethyst: Earned 1,000,000,000 credits (1,991,430,072)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 70107 - Posted: 17 Oct 2013 | 1:31:59 UTC

On 30 August 2013, PrimeGrid’s PRPNet found the 2nd largest known Factorial prime:

147855!-1

The prime is 700,177 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 2nd for Factorial primes and 191st overall.

The discovery was made by Pietari Snow (Lumiukko) of Finland using an Intel(R) Core(TM) i7 CPU 940 @ 2.93GHz with 6 GB RAM running Linux. This computer took just a little over 69 hours and 37 minutes to complete the primality test using pfgw. Pietari is a member of the PrimeSearchTeam.

For more details, please see the official announcement.

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Profile JHAPAProject donor
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Joined: 11 Sep 09
Posts: 121
ID: 46756
Credit: 122,542,909
RAC: 0
321 LLR Silver: Earned 100,000 credits (118,919)Cullen LLR Silver: Earned 100,000 credits (147,908)PPS LLR Bronze: Earned 10,000 credits (50,225)PSP LLR Silver: Earned 100,000 credits (234,507)SoB LLR Silver: Earned 100,000 credits (402,788)SR5 LLR Bronze: Earned 10,000 credits (34,004)SGS LLR Bronze: Earned 10,000 credits (25,034)TRP LLR Silver: Earned 100,000 credits (119,746)Woodall LLR Silver: Earned 100,000 credits (303,365)321 Sieve (suspended) Bronze: Earned 10,000 credits (35,967)Cullen/Woodall Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,427,885)PPS Sieve Double Bronze: Earned 100,000,000 credits (118,435,229)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (14,505)TRP Sieve (suspended) Bronze: Earned 10,000 credits (78,735)AP 26/27 Bronze: Earned 10,000 credits (24,502)PSA Amethyst: Earned 1,000,000 credits (1,080,000)
Message 70158 - Posted: 18 Oct 2013 | 18:29:01 UTC - in response to Message 70107.

Gratulation to Lumiukko...great shot!
JHAPA
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Profile Rick Reynolds
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Joined: 13 Aug 10
Posts: 7918
ID: 65483
Credit: 5,537,434,834
RAC: 10,828,670
Discovered 2 mega primesFound 2 primes in the 2018 Tour de PrimesFound 2 primes in the 2019 Tour de PrimesFound 12 primes in the 2020 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (10,244,909)Cullen LLR Jade: Earned 10,000,000 credits (10,194,451)ESP LLR Turquoise: Earned 5,000,000 credits (5,174,327)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,028,260)PPS LLR Emerald: Earned 50,000,000 credits (64,209,901)PSP LLR Turquoise: Earned 5,000,000 credits (5,151,448)SoB LLR Turquoise: Earned 5,000,000 credits (5,014,268)SR5 LLR Jade: Earned 10,000,000 credits (14,871,275)SGS LLR Turquoise: Earned 5,000,000 credits (7,860,522)TRP LLR Jade: Earned 10,000,000 credits (11,130,742)Woodall LLR Turquoise: Earned 5,000,000 credits (5,419,909)321 Sieve (suspended) Double Bronze: Earned 100,000,000 credits (101,538,236)Cullen/Woodall Sieve (suspended) Double Bronze: Earned 100,000,000 credits (127,922,665)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (30,984,158)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,840,173,136)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,134,964)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,013,696)AP 26/27 Double Silver: Earned 200,000,000 credits (276,723,135)WW Double Silver: Earned 200,000,000 credits (303,832,000)GFN Double Silver: Earned 200,000,000 credits (326,160,347)PSA Double Amethyst: Earned 1,000,000,000 credits (1,370,700,486)
Message 70159 - Posted: 18 Oct 2013 | 18:36:10 UTC

Congrats on this find! Well done.
____________
@AggieThePew

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Message boards : News : Factorial Prime Found!

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