Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
28461803Composite: 5 known prime factors
Factored
FactorDigitsBitsDate
910777697929.8old
391634409291135.22008-09-09 00:31:44
18084927081641625131960.62016-02-24 12:10:30
2108554122889551646072167.52022-09-29 09:41:34
182585679584433194345592374.02023-02-03 14:01:08
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
History
DateUserTypeResult
2024-02-01masserNF-PM1
B1=200000, B2=25949700
2023-12-14masserNF
no factor from 2^71 to 2^72
2023-10-18James HeinrichF
Factor: 210855412288955164607 / TF: 67-68
2023-02-03masserF-PP1
Start=2/7, B1=200000, B2=4400000, Factor: 18258567958443319434559
2023-01-31masserNF
no factor from 2^69 to 2^71
2022-10-01LordJuliusNF
no factor from 2^68 to 2^69
2022-10-01LordJuliusNF
no factor from 2^66 to 2^67
2022-10-01LordJuliusNF
no factor from 2^65 to 2^66
2022-09-29TJAOIF
Factor: 210855412288955164607 / TF: 67-68
2016-02-24TJAOIF
Factor: 1808492708164162513 / TF: 60-61
2008-09-09Will EdgingtonF
Factor: 39163440929