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

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MnStatusDetails
4672573Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
19614170347472881870078793543139133107.32023-03-03 12:23:11
ECM
DigitsB1Curves
25500009 / 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)1998-06-07Garry Star173BE25AEB7008100
Verified (Factored)2000-01-04Bill Roberts173BE25AEB7008102528677
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-03-10kutens5B8B2F17492DD587172879753
P-1 factors
DateFactorB1B2
2023-03-03196141703474728818700787935431391430000011204171550
History
DateUserTypeResult
2023-03-10curtiscCERT
PRP Certification
Proof certified good
2023-03-10kutensC-PRP
M4672573/196141703474728818700787935431391 : 5B8B2F17492DD587
PRP proof power = 7
PRP: Verified
Proof certified good
2023-03-03Sid & AndyF-PM1
Factor: 196141703474728818700787935431391 / (P-1, B1=4300000, B2=11204171550)
2021-10-29Aaron HavilandNF-PM1
B1=480000, B2=14400000, e=12
2021-03-24-Anonymous-NF
no factor from 2^71 to 2^72
2021-03-21-Anonymous-NF
no factor from 2^70 to 2^71
2021-03-21-Anonymous-NF
no factor from 2^69 to 2^70
2021-03-21-Anonymous-NF
no factor from 2^68 to 2^69
2018-10-18YxinityNF
no factor from 2^67 to 2^68
2018-10-18chuenkitNF
no factor from 2^67 to 2^68
2018-07-20BloodERazorNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-09snme2pm1NF
no factor from 2^65 to 2^66
2015-02-14monstNF
no factor from 2^64 to 2^65
2015-02-12JayderNF
no factor from 2^63 to 2^64
2013-06-06Squeeky_SquirrelNF-PM1
B1=145000, B2=2972500, E=6
2011-12-28GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-07-09markrNF
no factor from 2^61 to 2^62
2009-08-24Carsten KossendeyNF-PM1
B1=25000, B2=381250