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

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MnStatusDetails
2932271Factored
FactorDigitsBitsDate
5451723778102286772460092478.92021-01-08 01:40:14
ECM
DigitsB1Curves
255000048 / 280
Estimated T-Level: 20.9 ⓘ
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Mike Berkley569F7AD638FB8A480
Verified (Factored)1998-04-11Marco Bruno569F7AD638FB8A480
Verified (Factored)1999-10-21chris clark569F7AD638FB8A481915013
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-01-08riccardo ubertiD02898326E861D301117805553
History
DateUserTypeResult
2021-01-08RyanMcCartenCERT
PRP Certification
Proof certified good
2021-01-08riccardo ubertiC-PRP
M2932271/545172377810228677246009 : D02898326E861D30
PRP proof power = 7
PRP: Verified
Proof certified good
2021-01-08ZenzomaF-ECM
Factor: 545172377810228677246009 / (ECM curve 2, B1=50000, B2=5000000, Sigma=8507948042403668)
2018-12-20chuenkitNF
no factor from 2^67 to 2^68
2017-11-23Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2016-02-23ramgeisNF
no factor from 2^65 to 2^66
2015-04-29VictordeHollanderNF-PM1
B1=1000000, B2=20000000, E=12
2015-04-25VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-25VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-10dbaughNF
no factor from 2^62 to 2^63
2011-12-19Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-11-09markrNF-PM1
B1=105000, B2=2283750, E=6
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61