Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
9697297Factored
FactorDigitsBitsDate
3282974945013667116380892478.12022-10-01 16:25:29
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)2000-07-25Stephan Grupp08BC63B75A68B2135968943
Verified (Factored)2000-08-10Graeme Pope08BC63B75A68B2135027447
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-10-07Oliver KruseFFAF2F273497CEDA1470148053
P-1 factors
DateFactorB1B2
2022-10-0132829749450136671163808920000004298558550
History
DateUserTypeResult
2022-10-07DellingCERT
PRP Certification
Proof certified good
2022-10-07Oliver KruseC-PRP
M9697297/328297494501366711638089 : FFAF2F273497CEDA
PRP proof power = 8
PRP: Verified
Proof certified good
2022-10-01ThaF-PM1
Factor: 328297494501366711638089 / (P-1, B1=2000000, B2=4298558550)
2021-05-28-Anonymous-NF
no factor from 2^72 to 2^73
2021-05-26-Anonymous-NF
no factor from 2^71 to 2^72
2021-05-24-Anonymous-NF
no factor from 2^70 to 2^71
2021-05-24-Anonymous-NF
no factor from 2^69 to 2^70
2020-09-04storm5510NF-PM1
B1=345000, B2=9972000, E=6
2019-09-13TJAOINF
no factor from 2^68 to 2^69
2016-10-13snme2pm1NF
no factor from 2^67 to 2^68
2016-10-13snme2pm1NF
no factor from 2^66 to 2^67
2015-05-02VictordeHollanderNF
no factor from 2^65 to 2^66
2013-08-28NesowaNF
no factor from 2^64 to 2^65