Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
2319353Factored
FactorDigitsBitsDate
231314653498522646011932374.32020-08-02 00:35:26
ECM
DigitsB1Curves
255000082 / 280
Estimated T-Level: 21.5
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Robert MitchellA21C46F67AE41E060
Verified (Factored)Cornelius CaesarA21C46F67AE41E060
Verified (Factored)2015-11-15MadPooA21C46F67AE41E06997840
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-08-02ANONYMOUS332AFD29E4D1401A140095053
Verified2020-08-02mnd9332AFD29E4D1401A122650553
History
DateUserTypeResult
2020-08-02mnd9C-PRP
M2319353/23131465349852264601193 : 332AFD29E4D1401A
PRP: Verified
PRP without proof (not generated)
2020-08-02ANONYMOUSC-PRP
M2319353/23131465349852264601193 : 332AFD29E4D1401A
PRP: Verified
PRP without proof (not generated)
2020-08-02MarkSF-ECM
Factor: 23131465349852264601193 / (ECM curve 1, B1=50000, B2=5000000, Sigma=5971126826608546)
2019-04-15TJAOINF
no factor from 2^67 to 2^68
2018-01-20Sid & AndyNF-PM1
B1=6000000, B2=180000000, E=12
2017-06-03Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-11-15MadPooC-LL
A21C46F67AE41E06
2015-10-23ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-05-24Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-02-22BudNF-PM1
B1=500000, B2=10000000, E=12
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61