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
7187Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
48871601825.5old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000003053 / 16550
Estimated T-Level: 45.9
TF below 2^148 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse8F188D9F52D510451013
Verified2017-10-12kkmrkkblmbrbk8F188D9F52D510451366413
Verified2020-04-17Oliver KruseEF183A90DF3420051194553
Verified2024-02-03Wentao HuangEF183A90DF3420051156953
History
DateUserTypeResult
2024-09-04masserNF-PM1
B1=50000000000, B2=22579674677810250
2024-02-03Wentao HuangC-PRP
M7187/48871601 : EF183A90DF342005
PRP: Verified
PRP without proof (small exponent)
2023-02-17Denial140NF-PM1
B1=10000000000, B2=2850622481957250
2021-12-16Lisander ViaeneNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M7187/48871601 : EF183A90DF342005
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M7187/48871601 : 8F188D9F52D51045
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7187/48871601 : 8F188D9F52D51045
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7187/48871601 : 8F188D9F52D51045
PRP without proof (not generated)