Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
11620111Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
20683797591030.9old
843647762106635111756.22015-03-18 12:33:09
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-09-20ATH89858773E718A6222815363353
History
DateUserTypeResult
2025-06-10yuriy_5-1NF
no factor from 2^70 to 2^71
2025-05-05yuriy_5-1NF
no factor from 2^69 to 2^70
2025-03-28yuriy_5-1NF
no factor from 2^68 to 2^69
2025-03-10yuriy_5-1NF-PM1
B1=6972066, B2=448721460
2024-08-21yuriy_5-1NF-PM1
B1=2800000, B2=5499082050
2021-09-20GIMPS-PRIMCERT
PRP Certification
Proof certified good
2021-09-20ATHC-PRP
M11620111/2068379759/84364776210663511 : 89858773E718A622
PRP proof power = 8
PRP: Verified
Proof certified good
2015-03-18TJAOIF
Factor: 84364776210663511 / TF: 56-57