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
4539373Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 265
TF below 2^78 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 4400000
B2 = 11419636800
ECM
DigitsB1Curves
2550000276 / 280
Estimated T-Level: 24.9 ⓘ
LL
StatusDateUserResidueShift
VerifiedDavid Willmore7B2723DAF30A07330
Verified1998-08-16Johannes Stahl7B2723DAF30A07330
Verified2015-11-14MadPoo7B2723DAF30A0733145042
History
DateUserTypeResult
2023-02-08Sid & AndyNF-PM1
B1=4400000, B2=11419636800
2021-02-17-Anonymous-NF
no factor from 2^72 to 2^73
2021-02-01-Anonymous-NF
no factor from 2^71 to 2^72
2021-01-26-Anonymous-NF
no factor from 2^70 to 2^71
2021-01-26-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-26-Anonymous-NF
no factor from 2^68 to 2^69
2018-05-21ramgeisNF
no factor from 2^67 to 2^68
2018-05-21ramgeisNF
no factor from 2^66 to 2^67
2017-11-25Ismo LaitelaNF-PM1
B1=1988203, B2=61634303, E=12
2016-02-23Mark RoseNF
no factor from 2^61 to 2^63
2015-11-14MadPooC-LL
7B2723DAF30A0733
2015-06-30snme2pm1NF
no factor from 2^65 to 2^66
2014-11-26lycornNF
no factor from 2^64 to 2^65
2014-11-26JayderNF
no factor from 2^63 to 2^64
2011-12-28GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-08-15markrNF-PM1
B1=100000, B2=2075000, E=6