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
11227883Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 268
P-1
B1 = 10000000
B2 = 20021278200
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
LL
StatusDateUserResidueShift
Verified2000-10-28John Snell67D82C51D4B78A9910749681
Bad2004-02-23Ethan O'Connor53EFBD3EAC149EBD3078665
Verified2004-08-06Ars Technica Team Prime Rib67D82C51D4B78A991923708
History
DateUserTypeResult
2025-02-07James HeinrichNF
no factor from 2^72 to 2^73
2024-07-26vshNF
no factor from 2^72 to 2^73
2024-05-31vshNF-PM1
B1=10000000, B2=20021278200
2024-05-13vshNF-PM1
B1=5000000, B2=6152685000
2024-04-05vshNF-PM1
B1=2150000, B2=1796470830
2021-10-30SRBaseNF
no factor from 2^71 to 2^72
2021-08-14SRBaseNF
no factor from 2^70 to 2^71
2021-08-06SRBaseNF
no factor from 2^69 to 2^70
2017-12-27ramgeisNF
no factor from 2^68 to 2^69
2017-12-27ramgeisNF
no factor from 2^67 to 2^68
2015-12-28VictordeHollanderNF
no factor from 2^66 to 2^67
2015-05-07NesowaNF
no factor from 2^65 to 2^66
2013-11-23lycornNF
no factor from 2^64 to 2^65
2012-05-15James HeinrichNF-PM1
B1=215000, B2=5160000, E=6