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
7727Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
19280475353703441265815612580.7old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000006619 / 9201
Estimated T-Level: 43.6
TF below 2^140 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseFA536967142F9BB81013
Verified2017-10-12kkmrkkblmbrbkFA536967142F9BB81458413
Verified2020-04-17Oliver Kruse8897B6A902085EC01375653
Verified2024-02-03Wentao Huang8897B6A902085EC01469753
History
DateUserTypeResult
2024-12-13yuriy5-1NF-PM1
B1=32000000000, B2=200173322832783300
2024-02-03Wentao HuangC-PRP
M7727/1928047535370344126581561 : 8897B6A902085EC0
PRP: Verified
PRP without proof (small exponent)
2021-07-09ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M7727/1928047535370344126581561 : 8897B6A902085EC0
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M7727/1928047535370344126581561 : FA536967142F9BB8
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7727/1928047535370344126581561 : FA536967142F9BB8
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7727/1928047535370344126581561 : FA536967142F9BB8
PRP without proof (not generated)