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
8627Factored
FactorDigitsBitsDate
123348847926.9old
14297645980071340.4old
66758715359886711652.6old
1997741334437905131857.5old
4191098126304273611858.5old
6174394649735141865093502383533099.0old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000008203 / 16550
Estimated T-Level: 47.5
TF below 2^153 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseE553B4091A31B9E76013
Verified2017-10-02kkmrkkblmbrbkE553B4091A31B9E76013
Verified2017-12-07ATHE553B4091A31B9E76116813
Unverified2020-04-17Oliver KruseC119ADB25F9B6B__6563653
History
DateUserTypeResult
2023-08-13JacobZNF-PM1
B1=68000000000, B2=265422648792401100
2021-08-27Seth_TrNF-PM1
B1=400000000
2021-08-27Seth_TrNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M8627/123348847/1429764598007/6675871535988671/199774133443790513/419109812630427361/617439464973514186509350238353 : C119ADB25F9B6B__
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M8627/123348847/1429764598007/6675871535988671/199774133443790513/419109812630427361/617439464973514186509350238353 : E553B4091A31B9E7
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M8627/123348847/1429764598007/6675871535988671/199774133443790513/419109812630427361/617439464973514186509350238353 : E553B4091A31B9E7
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M8627/known_factors : E553B4091A31B9E7
PRP without proof (not generated)