Marin Mersenne 2^P-1
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MnStatusDetails
2959949Factored
FactorDigitsBitsDate
272240216104290270805272374.52020-09-24 03:10:14
ECM
DigitsB1Curves
255000022 / 280
Estimated T-Level: 20.4
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Chet Richards55025905C33781440
Verified (Factored)1999-12-30Jeff Malick55025905C33781441563192
Verified (Factored)2018-10-14kkmrkkblmbrbk55025905C33781441163303
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-09-25xyuzyz469BC61B923857781173573753
Verified2020-09-25kutens469BC61B92385778121405353
History
DateUserTypeResult
2020-09-25Simon JosefssonCERT
PRP Certification
Proof certified good
2020-09-25kutensC-PRP
M2959949/27224021610429027080527 : 469BC61B92385778
PRP proof power = 7
PRP: Verified
Proof certified good
2020-09-25xyuzyzC-PRP
M2959949/27224021610429027080527 : 469BC61B92385778
PRP: Verified
PRP without proof (not generated)
2020-09-24GANF-ECM
Factor: 27224021610429027080527 / (ECM curve 4, B1=50000, B2=5000000, Sigma=6293455149965760)
2018-12-24chuenkitNF
no factor from 2^67 to 2^68
2018-10-14kkmrkkblmbrbkC-LL
55025905C3378144
2017-12-03Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-26ramgeisNF
no factor from 2^65 to 2^66
2015-05-08VictordeHollanderNF-PM1
B1=1000000, B2=20000000, E=12
2015-04-29VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-29VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-12-09markrNF
no factor from 2^61 to 2^62
2010-10-31markrNF-PM1
B1=95000, B2=1995000, E=6
2009-02-14Sturle SundeNF
no factor from 2^60 to 2^61