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

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Exponent Range:










MnStatusDetails
6916769Factored
FactorDigitsBitsDate
11943072984290181438412812580.02023-07-16 08:17:41
ECM
DigitsB1Curves
25500006 / 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)1999-09-22Stephen Scott099225102C749DBF5769178
Verified (Factored)2001-09-10Milan Sismanovic099225102C749DBF4603054
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-07-17Naegi Makoto19E1BA65244A31961286893653
P-1 factors
DateFactorB1B2
2023-07-16119430729842901814384128135000009616446840
History
DateUserTypeResult
2023-07-17cswigerCERT
PRP Certification
Proof certified good
2023-07-17Naegi MakotoC-PRP
M6916769/1194307298429018143841281 : 19E1BA65244A3196
PRP proof power = 8
PRP: Verified
Proof certified good
2023-07-16ThaF-PM1
Factor: 1194307298429018143841281 / (P-1, B1=3500000, B2=9616446840)
2021-09-25SRBaseNF
no factor from 2^71 to 2^72
2021-08-12SRBaseNF
no factor from 2^70 to 2^71
2021-07-18takahashiNF
no factor from 2^69 to 2^70
2021-05-22takahashiNF-PM1
B1=1000000, B2=30000000, E=12
2020-05-15TJAOINF
no factor from 2^68 to 2^69
2019-04-27takahashiNF-PM1
B1=300000, B2=5000000, E=6
2018-02-27-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-02Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-26VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-17lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2011-03-06kurlyNF-PM1
B1=85000, B2=1508750, E=6