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
207247961Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
1214613794872557091192166.72015-10-19 20:31:50
2498427325321867264072167.82023-04-04 08:50:16
History
DateUserTypeResult
2023-04-04TJAOIF
Factor: 249842732532186726407 / TF: 67-68
2015-10-19ConductorF
Factor: 121461379487255709119 / TF: 66-67
2013-08-04carlos56NF
no factor from 2^65 to 2^66
2011-05-10dslNF
no factor from 2^64 to 2^65