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
2000143Factored
FactorDigitsBitsDate
61741038889667551511962.4old
ECM
DigitsB1Curves
2550000280 / 280
30250000115 / 640
Estimated T-Level: 25.9 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Kevin D. Quitt7AFB854059F08BEF0
Verified (Factored)1999-02-07Darek Mihocka7AFB854059F08BEF1826945
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-05Oliver KruseB2CDB228E2C147BC1013
Verified2017-11-13Chang Chia-TcheB2CDB228E2C147BC170132213
History
DateUserTypeResult
2022-11-24USAFSSNF-PM1
B1=650000, B2=713853294
2022-03-09LordJuliusNF
no factor from 2^66 to 2^67
2022-03-09LordJuliusNF
no factor from 2^65 to 2^66
2022-03-09LordJuliusNF
no factor from 2^64 to 2^65
2022-03-09LordJuliusNF
no factor from 2^63 to 2^64
2022-03-09LordJuliusNF
no factor from 2^1 to 2^62
2021-11-28Lisander ViaeneNF
no factor from 2^67 to 2^68
2017-11-13Chang Chia-TcheC-PRP
M2000143/6174103888966755151 : B2CDB228E2C147BC
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M2000143/6174103888966755151 : B2CDB228E2C147BC
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12