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

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MnStatusDetails
3764477Factored
FactorDigitsBitsDate
187246988102905322675112374.02021-11-01 18:15:58
ECM
DigitsB1Curves
255000023 / 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)Ari Orn9392A86F01F60E420
Verified (Factored)1999-08-16David Linton9392A86F01F60E421302955
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-11-07kutens152EDA1CA59B391D1299288653
History
DateUserTypeResult
2022-05-25JossNF-PM1
B1=100000, B2=130364850
2022-03-22JossNF-PM1
B1=100000
2022-03-03JossNF-PM1
B1=90000
2021-11-07Ben DeloCERT
PRP Certification
Proof certified good
2021-11-07kutensC-PRP
M3764477/18724698810290532267511 : 152EDA1CA59B391D
PRP proof power = 7
PRP: Verified
Proof certified good
2021-11-01daveward2005F-ECM
Factor: 18724698810290532267511 / (ECM curve 4, B1=50000, B2=5000000, Sigma=1545687858733850)
2021-03-28axnNF
no factor from 2^69 to 2^70
2020-12-06axnNF
no factor from 2^68 to 2^69
2019-02-08YxinityNF
no factor from 2^67 to 2^68
2019-01-21TJAOINF
no factor from 2^67 to 2^68
2016-11-09Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-28ramgeisNF
no factor from 2^65 to 2^66
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-01-18mikrNF-PM1
B1=1600000, B2=66000000, E=12
2015-01-25VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-25VictordeHollanderNF
no factor from 2^63 to 2^64
2012-04-05Squeeky_SquirrelNF-PM1
B1=110000, B2=2035000, E=6
2012-03-23GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-04-22markrNF
no factor from 2^61 to 2^62
2009-07-12Carsten KossendeyNF-PM1
B1=20000, B2=265000
2009-03-02S485122NF
no factor from 2^60 to 2^61