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

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MnStatusDetails
2306309Factored
FactorDigitsBitsDate
27110210967670571896614237125464933107.72021-10-13 00:25:18
ECM
DigitsB1Curves
2550000167 / 280
Estimated T-Level: 23.0 ⓘ
TF below 2^71 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Dominik Gaillardetz30CA9B1B6C6807680
Verified (Factored)Gus Altobello Jr30CA9B1B6C6807680
Verified (Factored)1999-03-15Gordon Cross30CA9B1B6C6807681285569
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-10-15GAN156043815E479DC11210112553
History
DateUserTypeResult
2021-10-15paulieCERT
PRP Certification
Proof certified good
2021-10-15GANC-PRP
M2306309/271102109676705718966142371254649 : 156043815E479DC1
PRP proof power = 7
PRP: Verified
Proof certified good
2021-10-13GANF-ECM
Factor: 271102109676705718966142371254649 / (ECM curve 5, B1=50000, B2=5000000, Sigma=4819430867759355)
2021-07-26TJAOINF
no factor from 2^68 to 2^69
2019-05-06TJAOINF
no factor from 2^67 to 2^68
2018-01-24Sid & AndyNF-PM1
B1=6000000, B2=180000000, E=12
2017-05-30Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-10-22ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-05-13Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-02-12BudNF-PM1
B1=500000, B2=10000000, E=12
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61