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

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MnStatusDetails
3453829Factored
FactorDigitsBitsDate
1987801365734877553947532477.42009-07-06 11:07:15
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-06-28Michael Hanscho58F2AAC33AC13B170
Verified (Factored)1999-09-07Bruce Mitchell58F2AAC33AC13B172219868
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-06Oliver KruseA5040F0A43CAF4A81174786053
Verified2017-12-16kkmrkkblmbrbkA5040F0A43CAF4A81323947753
History
DateUserTypeResult
2022-09-05JossNF-PM1
B1=1163455, B2=213444000
2022-05-12LordJuliusNF
no factor from 2^64 to 2^65
2022-05-12LordJuliusNF
no factor from 2^63 to 2^64
2022-05-12LordJuliusNF
no factor from 2^62 to 2^63
2022-05-12LordJuliusNF
no factor from 2^1 to 2^62
2022-01-06JossNF-PM1
B1=1163455, B2=111642300
2021-06-11JossNF
no factor from 2^67 to 2^68
2021-03-17JossNF
no factor from 2^66 to 2^67
2021-03-17JossNF-PM1
B1=345382, B2=3453829, E=6
2021-02-28JossNF
no factor from 2^65 to 2^66
2017-12-16kkmrkkblmbrbkC-PRP
M3453829/198780136573487755394753 : A5040F0A43CAF4A8
PRP: Verified
PRP without proof (not generated)
2017-11-06Oliver KruseC-PRP
M3453829/198780136573487755394753 : A5040F0A43CAF4A8
PRP: Verified
PRP without proof (not generated)
2009-07-06Carsten KossendeyF-PM1
Factor: 198780136573487755394753
2009-03-22S485122NF
no factor from 2^60 to 2^61