Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
9887Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
2350213657031237.8old
329279076390867156658901699490862955023638092946151.22024-07-06 22:23:33
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000006699 / 16550
Estimated T-Level: 47.0
TF below 2^151 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver Kruse577117377742A1AF1013
Verified (Factored)2017-10-12kkmrkkblmbrbk577117377742A1AF1899913
Verified (Factored)2020-04-17Oliver Kruse41A2AFB27EF19E95165553
Verified (Factored)2024-07-01kkmrkkblmbrbk41A2AFB27EF19E951650453
Verified2024-07-06nordi41A2AFB27EF19E952681753
History
DateUserTypeResult
2024-07-06nordiC-PRP
M9887/235021365703/3292790763908671566589016994908629550236380929 : 41A2AFB27EF19E95
PRP: Verified
PRP without proof (small exponent)
2024-07-06nordiF-ECM
Factor: 3292790763908671566589016994908629550236380929 / (ECM curve 62, B1=44000000, B2=1117403522235, Edwards Sigma=7318492293070928)
2024-07-01kkmrkkblmbrbkC-PRP
M9887/235021365703 : 41A2AFB27EF19E95
PRP: Verified
PRP without proof (small exponent)
2023-06-12JacobZNF-PM1
B1=58000000000, B2=241250667952694400
2022-11-24Kevin_9611NF-PM1
B1=1000000000, B2=100294988083290
2022-02-05JossNF-PM1
B1=1000000, B2=6010952007060
2020-04-17Oliver KruseC-PRP
M9887/235021365703 : 41A2AFB27EF19E95
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M9887/235021365703 : 577117377742A1AF
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M9887/235021365703 : 577117377742A1AF
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M9887/235021365703 : 577117377742A1AF
PRP without proof (not generated)