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

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MnStatusDetails
9491897Factored
FactorDigitsBitsDate
7371009326204063605719690048133557730204521744145.72022-06-19 23:49:12
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)2000-04-19William Newman464816EE8C0196696583699
Verified (Factored)2003-09-09Brian Jongekryg464816EE8C0196694353425
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-06-27firejugglerC74D6E5DD5BB9BAD1712344953
P-1 factors
DateFactorB1B2
2022-06-197371009326204063605719690048133557730204521720000004660145490
History
DateUserTypeResult
2022-06-27Simon JosefssonCERT
PRP Certification
Proof certified good
2022-06-27firejugglerC-PRP
M9491897/73710093262040636057196900481335577302045217 : C74D6E5DD5BB9BAD
PRP proof power = 8
PRP: Verified
Proof certified good
2022-06-19ThaF-PM1
Factor: 73710093262040636057196900481335577302045217 / (P-1, B1=2000000, B2=4660145490)
2021-10-19SRBaseNF
no factor from 2^71 to 2^72
2021-08-29SRBaseNF
no factor from 2^70 to 2^71
2021-08-21SRBaseNF
no factor from 2^69 to 2^70
2021-08-19TJAOINF
no factor from 2^69 to 2^70
2019-09-16mnd9NF
no factor from 2^68 to 2^69
2016-06-20snme2pm1NF
no factor from 2^67 to 2^68
2016-06-20snme2pm1NF
no factor from 2^66 to 2^67
2015-05-08VictordeHollanderNF
no factor from 2^65 to 2^66
2013-09-04NesowaNF
no factor from 2^64 to 2^65
2013-01-08NesowaNF-PM1
B1=115000, B2=2156250, E=6