Marin Mersenne 2^P-1
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MnStatusDetails
4813591Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
56051298065362455721992272.22025-09-13 14:58:44
ECM
DigitsB1Curves
2550000247 / 280
Estimated T-Level: 24.4 ⓘ
TF below 2^76 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Guido Stolz1FE8A849A5D639270
Verified (Factored)2000-02-09Gavin Brock1FE8A849A5D639273966150
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2025-09-13fordobr04AAD7650FEC56891104210753
History
DateUserTypeResult
2025-09-13AndreCERT
PRP Certification
Proof certified good
2025-09-13fordobrC-PRP
M4813591/5605129806536245572199 : 04AAD7650FEC5689
PRP proof power = 7
PRP: Verified
Proof certified good
2025-09-13fordobrF-ECM
Factor: 5605129806536245572199 / (ECM curve 41, B1=92825, B2=183700675, Edwards Sigma=6317542413037611)
2023-01-05Sid & AndyNF-PM1
B1=4100000, B2=10595549250
2020-12-07-Anonymous-NF
no factor from 2^71 to 2^72
2020-12-03-Anonymous-NF
no factor from 2^70 to 2^71
2020-12-03-Anonymous-NF
no factor from 2^69 to 2^70
2020-12-03-Anonymous-NF
no factor from 2^68 to 2^69
2018-05-08ramgeisNF
no factor from 2^67 to 2^68
2017-11-12YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^1 to 2^61
2015-07-18snme2pm1NF
no factor from 2^65 to 2^66
2015-01-04VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-04VictordeHollanderNF
no factor from 2^63 to 2^64
2013-12-07David CampeauNF-PM1
B1=420000, B2=10920000, E=12
2011-09-11GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-05-10markrNF
no factor from 2^61 to 2^62
2009-08-25Carsten KossendeyNF-PM1
B1=30000, B2=420000