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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
7691Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
15383513.9old
231047023031134.4old
279006198945529131754.6old
364522274234101785775611532684.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002050 / 9201
Estimated T-Level: 41.1
TF below 2^132 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse6277575EF9DD244F4013
Verified2017-10-02kkmrkkblmbrbk6277575EF9DD244F4013
Verified2017-12-07ATH6277575EF9DD244F4519513
Verified2020-04-17Oliver Kruse380B9BF87ED6743C4716153
Verified (Factored)2022-05-12Jorge Coveiro380B9BF87ED6743C1610353
Verified2024-02-03Wentao Huang380B9BF87ED6743C4640353
History
DateUserTypeResult
2024-12-09yuriy5-1NF-PM1
B1=24000000000, B2=93848103835646160
2024-02-03Wentao HuangC-PRP
M7691/15383/23104702303/27900619894552913/36452227423410178577561153 : 380B9BF87ED6743C
PRP: Verified
PRP without proof (small exponent)
2022-05-12Jorge CoveiroC-PRP
M7691/15383 : 380B9BF87ED6743C
PRP: Verified
PRP without proof (small exponent)
2021-07-08ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M7691/15383/23104702303/27900619894552913/36452227423410178577561153 : 380B9BF87ED6743C
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M7691/15383/23104702303/27900619894552913/36452227423410178577561153 : 6277575EF9DD244F
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M7691/15383/23104702303/27900619894552913/36452227423410178577561153 : 6277575EF9DD244F
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7691/known_factors : 6277575EF9DD244F
PRP without proof (not generated)