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

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MnStatusDetails
8286433Factored
FactorDigitsBitsDate
258685652902144733474812374.52022-11-22 17:33:46
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)1999-10-29Paul Hallett604FE96CF3719A414977167
Verified (Factored)2003-02-16Aaron Zod604FE96CF3719A411911139
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-11-28Funky Waddle8DBE25DFEF2C16E91391300853
P-1 factors
DateFactorB1B2
2022-11-222586856529021447334748130000004451879250
History
DateUserTypeResult
2022-11-28Randall W. AndersonCERT
PRP Certification
Proof certified good
2022-11-28Funky WaddleC-PRP
M8286433/25868565290214473347481 : 8DBE25DFEF2C16E9
PRP proof power = 8
PRP: Verified
Proof certified good
2022-11-22linamentF-PM1
Factor: 25868565290214473347481 / (P-1, B1=3000000, B2=4451879250)
2021-10-05SRBaseNF
no factor from 2^71 to 2^72
2021-08-31SRBaseNF
no factor from 2^70 to 2^71
2021-08-19SRBaseNF
no factor from 2^69 to 2^70
2020-01-10TJAOINF
no factor from 2^68 to 2^69
2018-01-02monstNF
no factor from 2^67 to 2^68
2015-12-19snme2pm1NF
no factor from 2^66 to 2^67
2015-06-03VictordeHollanderNF
no factor from 2^65 to 2^66
2014-01-05David CampeauNF
no factor from 2^64 to 2^65
2011-01-28Carsten KossendeyNF-PM1
B1=510000, B2=15682500, E=12