Marin Mersenne 2^P-1
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MnStatusDetails
2565389Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
691385525229748657046191692685.82023-01-12 17:15:39
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)Joe DeckerCA1A2FF0E8046C1C0
Verified (Factored)1999-05-09John GilliamCA1A2FF0E8046C1C491237
Verified (Factored)2018-06-15kkmrkkblmbrbkCA1A2FF0E8046C1C78892
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-01-13LordJuliusE1B3E0EC75A5C7B6118367353
P-1 factors
DateFactorB1B2
2023-01-126913855252297486570461916950000008646469650
History
DateUserTypeResult
2023-01-13Team_InspectorCERT
PRP Certification
Proof certified good
2023-01-13LordJuliusC-PRP
M2565389/69138552522974865704619169 : E1B3E0EC75A5C7B6
PRP proof power = 7
PRP: Verified
Proof certified good
2023-01-12Architects CubedF-PM1
Factor: 69138552522974865704619169 / (P-1, B1=5000000, B2=8646469650)
2021-06-21TJAOINF
no factor from 2^68 to 2^69
2019-06-03TJAOINF
no factor from 2^67 to 2^68
2018-06-15kkmrkkblmbrbkC-LL
CA1A2FF0E8046C1C
2017-08-13Gordon SpenceNF
no factor from 2^66 to 2^67
2016-05-17mikrNF-PM1
B1=3200000, B2=112000000, E=12
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-08ramgeisNF
no factor from 2^65 to 2^66
2015-02-23VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-23VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-06-17Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-04-14James HeinrichNF-PM1
B1=175000, B2=4112500, E=6
2011-01-10JossNF-PM1
B1=50000
2011-01-03JossNF-PM1
B1=30000
2010-12-21JossNF-PM1
B1=20000
2009-01-29Sturle SundeNF
no factor from 2^60 to 2^61