Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
6227099Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 266
P-1
B1 = 5000000
B2 = 31092401340
ECM
DigitsB1Curves
255000095 / 280
Estimated T-Level: 21.7 ⓘ
LL
StatusDateUserResidueShift
Verified1999-02-07Ron FreimuthF96B7EE7178D377D0
Verified2001-06-23Ron LavalleeF96B7EE7178D377D363168
History
DateUserTypeResult
2023-05-07Naegi MakotoNF-PM1
B1=5000000, B2=31092401340
2021-10-14firejugglerNF-PM1
B1=3000000, B2=243000000
2021-10-10SRBaseNF
no factor from 2^71 to 2^72
2021-08-16SRBaseNF
no factor from 2^70 to 2^71
2020-11-22takahashiNF
no factor from 2^69 to 2^70
2020-04-04takahashiNF
no factor from 2^68 to 2^69
2019-10-03takahashiNF-PM1
B1=600000, B2=12000000, E=12
2018-06-01ramgeisNF
no factor from 2^67 to 2^68
2016-03-21Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-10-12snme2pm1NF
no factor from 2^65 to 2^66
2014-09-17monstNF
no factor from 2^64 to 2^65
2014-09-12NesowaNF
no factor from 2^63 to 2^64
2013-04-15Squeeky_SquirrelNF-PM1
B1=115000, B2=2300000, E=6