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

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MnStatusDetails
2316863Factored
FactorDigitsBitsDate
25427339040260939601760812581.12021-08-20 12:01:02
ECM
DigitsB1Curves
2550000162 / 280
Estimated T-Level: 22.9 ⓘ
TF below 2^71 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Robert Clark6C9A72BFA61134050
Verified (Factored)1999-03-15Oner Cetin6C9A72BFA61134052043796
Verified (Factored)2018-05-04kkmrkkblmbrbk6C9A72BFA6113405183688
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-08-22SRJ2877798BCC3EE5B026731176824053
History
DateUserTypeResult
2021-08-22ChuckCERT
PRP Certification
Proof certified good
2021-08-22SRJ2877C-PRP
M2316863/2542733904026093960176081 : 798BCC3EE5B02673
PRP proof power = 7
PRP: Verified
Proof certified good
2021-08-20daveward2005F-ECM
Factor: 2542733904026093960176081 / (ECM curve 5, B1=50000, B2=5000000, Sigma=7925695202403817)
2021-07-05TJAOINF
no factor from 2^68 to 2^69
2019-04-15TJAOINF
no factor from 2^67 to 2^68
2018-05-04kkmrkkblmbrbkC-LL
6C9A72BFA6113405
2018-01-05Sid & 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
2015-10-23ramgeisNF
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
2010-02-19BudNF-PM1
B1=500000, B2=10000000, E=12
2009-01-13Sturle SundeNF
no factor from 2^60 to 2^61