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
6222059Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 266
P-1
B1 = 5000000
B2 = 31092401340
ECM
DigitsB1Curves
255000084 / 280
Estimated T-Level: 21.5 ⓘ
LL
StatusDateUserResidueShift
Verified1998-11-21Fredrik Malmsten266FEF2702C5AA0E0
Verified2001-01-08Craig Etter266FEF2702C5AA0E3776728
History
DateUserTypeResult
2024-11-18takahashiNF
no factor from 2^72 to 2^73
2023-05-05Naegi MakotoNF-PM1
B1=5000000, B2=31092401340
2021-10-08firejugglerNF-PM1
B1=3000000, B2=243000000
2021-09-21SRBaseNF
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
2019-09-19takahashiNF-PM1
B1=600000, B2=12000000, E=12
2018-06-01ramgeisNF
no factor from 2^67 to 2^68
2016-03-19Gordon 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
2011-05-13markrNF-PM1
B1=115000, B2=2271250, E=6