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
2741Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
82231516.3old
7798628288313962160251121728330756935115.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
551100000007040 / 40830
Estimated T-Level: 50.9
TF below 2^164 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse0D3502B7281FC2562013
Verified2017-10-02kkmrkkblmbrbk0D3502B7281FC2562013
Verified2017-12-07ATH0D3502B7281FC256255713
Verified2020-04-17Oliver KruseA1808A8EE6F2409D244153
Verified2024-02-03Wentao HuangA1808A8EE6F2409D2121353
History
DateUserTypeResult
2024-06-13masserNF-PM1
B1=100000000000, B2=167852383550451600
2024-02-03Wentao HuangC-PRP
M2741/82231/77986282883139621602511217283307569 : A1808A8EE6F2409D
PRP: Verified
PRP without proof (small exponent)
2021-07-06ViliamFNF-PM1
B1=1000000000, B2=191000000000
2020-04-17Oliver KruseC-PRP
M2741/82231/77986282883139621602511217283307569 : A1808A8EE6F2409D
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M2741/82231/77986282883139621602511217283307569 : 0D3502B7281FC256
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M2741/82231/77986282883139621602511217283307569 : 0D3502B7281FC256
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M2741/known_factors : 0D3502B7281FC256
PRP without proof (not generated)