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
6269573Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 266
P-1
B1 = 5000000
B2 = 31162761630
ECM
DigitsB1Curves
255000099 / 280
Estimated T-Level: 21.8 ⓘ
LL
StatusDateUserResidueShift
Verified1998-11-28Marc Getty / Phil FizurFD4B8B0C96BC5FA50
Verified2001-04-08Jason ShizgalFD4B8B0C96BC5FA55981351
History
DateUserTypeResult
2023-06-13Naegi MakotoNF-PM1
B1=5000000, B2=31162761630
2021-10-13SRBaseNF
no factor from 2^71 to 2^72
2021-08-09SRBaseNF
no factor from 2^70 to 2^71
2021-01-24takahashiNF
no factor from 2^69 to 2^70
2020-04-12takahashiNF
no factor from 2^68 to 2^69
2019-10-25takahashiNF-PM1
B1=600000, B2=12000000, E=12
2018-06-01ramgeisNF
no factor from 2^67 to 2^68
2016-03-24Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-10-15snme2pm1NF
no factor from 2^65 to 2^66
2014-09-14monstNF
no factor from 2^64 to 2^65
2014-09-12NesowaNF
no factor from 2^63 to 2^64
2013-05-20Squeeky_SquirrelNF-PM1
B1=115000, B2=2328750, E=6