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
6263Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
12527513.6old
1704890856773934366412167.2old
30275594972181515846064633721444933107.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001429 / 9201
Estimated T-Level: 40.8
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseFD79A25A0C218A9F3013
Verified2017-10-02kkmrkkblmbrbkFD79A25A0C218A9F3013
Verified2017-12-07ATHFD79A25A0C218A9F3316913
Verified2020-04-17Oliver KruseB2A2EE98BDBB2CE33214153
Verified (Factored)2022-05-12Jorge CoveiroB2A2EE98BDBB2CE31393753
Verified2024-02-03Wentao HuangB2A2EE98BDBB2CE33321553
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
2024-10-21Denial140factor ECM small0.00 % 2024-10-24
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M6263/12527/170489085677393436641/302755949721815158460646337214449 : B2A2EE98BDBB2CE3
PRP: Verified
PRP without proof (small exponent)
2023-08-01-Anonymous-NF-PM1
B1=39000000000, B2=163113042636343800
2022-05-12Jorge CoveiroC-PRP
M6263/12527 : B2A2EE98BDBB2CE3
PRP: Verified
PRP without proof (small exponent)
2021-08-01ViliamFNF-PM1
B1=500000000, B2=90500000000
2020-04-17Oliver KruseC-PRP
M6263/12527/170489085677393436641/302755949721815158460646337214449 : B2A2EE98BDBB2CE3
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M6263/12527/170489085677393436641/302755949721815158460646337214449 : FD79A25A0C218A9F
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M6263/12527/170489085677393436641/302755949721815158460646337214449 : FD79A25A0C218A9F
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M6263/known_factors : FD79A25A0C218A9F
PRP without proof (not generated)