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
5431Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
54311515.7old
1401199720.4old
60408795771032.5old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000012497 / 16550
Estimated T-Level: 48.8
TF below 2^157 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseA60A0B26B1E5776B3013
Verified2017-10-12kkmrkkblmbrbkA60A0B26B1E5776B3224413
Verified2020-04-17Oliver Kruse53AD84106A8830F03160153
Verified2024-02-03Wentao Huang53AD84106A8830F03315253
History
DateUserTypeResult
2024-05-26mikrNF-PM1
B1=500000000000, B2=1177314837267769200
2024-02-03Wentao HuangC-PRP
M5431/54311/1401199/6040879577 : 53AD84106A8830F0
PRP: Verified
PRP without proof (small exponent)
2023-07-09-Anonymous-NF-PM1
B1=46000000000, B2=193133522175293700
2022-01-24Ethan O'ConnorNF-PM1
B1=1300000000
2021-12-16Oliver KruseNF-PM1
B1=1000000000, B2=1002849399191640
2020-04-17Oliver KruseC-PRP
M5431/54311/1401199/6040879577 : 53AD84106A8830F0
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M5431/54311/1401199/6040879577 : A60A0B26B1E5776B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M5431/54311/1401199/6040879577 : A60A0B26B1E5776B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M5431/54311/1401199/6040879577 : A60A0B26B1E5776B
PRP without proof (not generated)