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
4271Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
8543413.1old
15953039211030.6old
79885211111032.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000010012 / 40830
Estimated T-Level: 51.2
TF below 2^165 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseDA6BFD833A7DED833013
Verified2017-10-12kkmrkkblmbrbkDA6BFD833A7DED833314313
Verified2020-04-17Oliver KruseE49F2FA30729FADC3199353
Verified (Factored)2022-05-12Jorge CoveiroE49F2FA30729FADC1262153
Verified2024-02-03Wentao HuangE49F2FA30729FADC3401953
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M4271/8543/1595303921/7988521111 : E49F2FA30729FADC
PRP: Verified
PRP without proof (small exponent)
2023-05-20-Anonymous-NF-PM1
B1=75000000000, B2=751710476301835050
2022-05-12Jorge CoveiroC-PRP
M4271/8543 : E49F2FA30729FADC
PRP: Verified
PRP without proof (small exponent)
2021-07-05ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M4271/8543/1595303921/7988521111 : E49F2FA30729FADC
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M4271/8543/1595303921/7988521111 : DA6BFD833A7DED83
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M4271/8543/1595303921/7988521111 : DA6BFD833A7DED83
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M4271/8543/1595303921/7988521111 : DA6BFD833A7DED83
PRP without proof (not generated)