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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MnStatusDetails
206475487Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5522092086506751655192168.92017-10-15 15:14:52
History
DateUserTypeResult
2025-03-24James HeinrichF
Factor: 552209208650675165519 / TF: 68-70
2017-10-15AlissonF
Factor: 552209208650675165519 / TF: 68-69
2016-08-31Mr-PlonkNF
no factor from 2^67 to 2^68
2015-10-06tscNF
no factor from 2^66 to 2^67
2013-08-02David CampeauNF
no factor from 2^65 to 2^66
2011-05-09oodairaNF
no factor from 2^64 to 2^65