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
4509073Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 265
P-1
B1 = 6200000
B2 = 25140507210
ECM
DigitsB1Curves
2550000175 / 280
Estimated T-Level: 23.1 ⓘ
LL
StatusDateUserResidueShift
Verified1998-08-30Alexey Guzeev63051CA64A1B5BF20
Verified1999-12-15Vincent Snijders63051CA64A1B5BF21859294
History
DateUserTypeResult
2022-03-16ThaNF-PM1
B1=6200000, B2=25140507210
2021-02-16-Anonymous-NF
no factor from 2^72 to 2^73
2021-02-05-Anonymous-NF
no factor from 2^71 to 2^72
2021-01-27-Anonymous-NF
no factor from 2^70 to 2^71
2021-01-27-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-27-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
2016-06-25Squeeky_SquirrelNF-PM1
B1=170000, B2=4335000, E=6
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-28snme2pm1NF
no factor from 2^65 to 2^66
2014-10-24lycornNF
no factor from 2^64 to 2^65
2014-10-23JayderNF
no factor from 2^63 to 2^64
2014-10-22JossNF-PM1
B1=74234
2011-12-29GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-09-17markrNF
no factor from 2^61 to 2^62
2010-08-05Squeeky_SquirrelNF-PM1
B1=60000, B2=1050000, E=6