Marin Mersenne 2^P-1
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MnStatusDetails
6439051Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
29509562735436152717836147041658624641208759145147.72023-05-16 19:40:07
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-09-30Ed Knapton385D5D01D6178A5E6086879
Verified (Factored)2002-05-18Marc Buchmann385D5D01D6178A5E6128382
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-05-16linament7ED143A464BA7E6B1609716653
P-1 factors
DateFactorB1B2
2023-05-16295095627354361527178361470416586246412087591400000018004726740
History
DateUserTypeResult
2023-05-16curtiscCERT
PRP Certification
Proof certified good
2023-05-16linamentC-PRP
M6439051/295095627354361527178361470416586246412087591 : 7ED143A464BA7E6B
PRP proof power = 7
PRP: Verified
Proof certified good
2023-05-16linamentF-PM1
Factor: 295095627354361527178361470416586246412087591 / (P-1, B1=4000000, B2=18004726740)
2023-05-15linamentNF-PM1
B1=3999900
2022-01-03Architects CubedNF-PM1
B1=1000000, B2=390677430
2021-10-11SRBaseNF
no factor from 2^71 to 2^72
2021-08-10SRBaseNF
no factor from 2^70 to 2^71
2021-03-02takahashiNF
no factor from 2^69 to 2^70
2020-05-17takahashiNF
no factor from 2^68 to 2^69
2018-06-06ramgeisNF
no factor from 2^67 to 2^68
2016-04-03Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-10-24snme2pm1NF
no factor from 2^65 to 2^66
2014-09-16NesowaNF-PM1
B1=395000, B2=9973750, E=12
2014-08-05lycornNF
no factor from 2^64 to 2^65
2014-08-02NesowaNF
no factor from 2^63 to 2^64