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
49698071Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 276
TF target 273
P-1
B1 = 1500000
B2 = 45000000
ECM
DigitsB1Curves
255000011 / 280
Estimated T-Level: 20.2 ⓘ
LL
StatusDateUserResidueShift
Verified2010-09-16Smok_bmv AA6FE3CC1CDFF32B3739125
Verified2019-09-01Sergey NosovAA6FE3CC1CDFF32B16632434
History
DateUserTypeResult
2021-09-12Anton RepkoNF
no factor from 2^75 to 2^76
2021-08-15Sid & AndyNF
no factor from 2^74 to 2^75
2021-07-01Anton RepkoNF-PP1
Start=2/7, B1=700000, B2=34300000
2021-03-08Sid & AndyNF-PM1
B1=1500000, B2=45000000
2019-09-01Sergey NosovC-LL
AA6FE3CC1CDFF32B
2019-01-05-Anonymous-NF
no factor from 2^73 to 2^74
2018-01-22Mark RoseNF
no factor from 2^72 to 2^73
2015-11-25dragonbud20NF
no factor from 2^71 to 2^72
2015-09-30GregNF
no factor from 2^70 to 2^71
2015-07-14Gordon SpenceNF
no factor from 2^69 to 2^70
2010-09-16Smok_bmv C-LL
AA6FE3CC1CDFF32B
2010-02-12JamesNF-PM1
B1=780000