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

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MnStatusDetails
4283429Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
4632609707655013829402322320573098.52022-06-27 14:58:23
ECM
DigitsB1Curves
255000012 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-04-11Frank Gentges82400EB41E1857100
Verified (Factored)2001-04-15Paul Victor Novarese82400EB41E185710783757
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-07-03Oliver KruseCA8FF7CD4CCA4BD2147722653
P-1 factors
DateFactorB1B2
2022-06-27463260970765501382940232232057620000027202435260
History
DateUserTypeResult
2022-07-03curtiscCERT
PRP Certification
Proof certified good
2022-07-03Oliver KruseC-PRP
M4283429/463260970765501382940232232057 : CA8FF7CD4CCA4BD2
PRP proof power = 7
PRP: Verified
Proof certified good
2022-06-27DRobinsonPEF-PM1
Factor: 463260970765501382940232232057 / (P-1, B1=6200000, B2=27202435260)
2021-01-24-Anonymous-NF
no factor from 2^70 to 2^71
2021-01-23-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-23-Anonymous-NF
no factor from 2^68 to 2^69
2018-11-17chuenkitNF
no factor from 2^67 to 2^68
2018-04-26chuenkitNF
no factor from 2^66 to 2^67
2017-03-04Ismo LaitelaNF-PM1
B1=2098905, B2=65066057, E=12
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-13snme2pm1NF
no factor from 2^65 to 2^66
2014-05-30lycornNF
no factor from 2^64 to 2^65
2014-05-05JayderNF
no factor from 2^63 to 2^64
2012-01-31GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-12-27markrNF
no factor from 2^61 to 2^62
2010-09-03markrNF-PM1
B1=95000, B2=2066250, E=6