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
719941Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 268
TF target 244
TF below 2^90 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 100000000
B2 = 2855520507840
ECM
DigitsB1Curves
2550000280 / 280
30250000451 / 640
Estimated T-Level: 28.5 ⓘ
LL
StatusDateUserResidueShift
VerifiedKen KrieselC8D4909DFB8B26350
VerifiedTom CageC8D4909DFB8B26350
VerifiedRoland AndersonC8D4909DFB8B26350
Verified2015-05-04MadPooC8D4909DFB8B2635718110
History
DateUserTypeResult
2024-02-23ThaNF-PM1
B1=100000000, B2=2855520507840
2023-07-13JossNF-PM1
B1=5501000, B2=33458074650
2023-05-08masserNF-PP1
Start=6/5, B1=7000000, B2=343000000
2023-04-14masserNF-PP1
Start=186/53, B1=7000000, B2=322000000
2023-04-11masserNF-PP1
Start=2/7, B1=7000000, B2=336000000
2023-03-09JossNF-PM1
B1=1000000, B2=14209625430
2023-01-26JossNF-PM1
B1=1000000, B2=4929814890
2022-03-29Gordon SpenceNF
no factor from 2^67 to 2^68
2020-05-08Gordon SpenceNF
no factor from 2^66 to 2^67
2017-07-19Smok_bmv NF
no factor from 2^65 to 2^66
2016-05-23mikrNF-PM1
B1=24000000, B2=1200000000, E=12
2016-04-27lycornNF
no factor from 2^64 to 2^65
2015-10-17Gordon SpenceNF
no factor from 2^63 to 2^64
2015-10-17Gordon SpenceNF
no factor from 2^62 to 2^63
2015-05-04MadPooC-LL
C8D4909DFB8B2635
2015-03-01NRNF
no factor from 2^61 to 2^62
2010-06-18Architects CubedNF
no factor from 2^60 to 2^61
2008-12-01Jayson KingNF-PM1
B1=5000000, B2=100000000, E=12
2008-10-11Sturle SundeNF
no factor from 2^59 to 2^60