686 401 789 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite: 1 known prime factor

Factored

Factor	Digits	Bits	Date
209771838120502526017	21	67.5	2016-12-01 12:27:46

History

Date	User	Type	Result
2016-12-01	fralt	F	Factor: 209771838120502526017 / TF: 67-68
2014-08-04	sasaki	NF	no factor from 2^66 to 2^67
2014-02-08	sasaki	NF	no factor from 2^65 to 2^66
2012-02-02	Andrew B	NF	no factor from 2^64 to 2^65
2010-07-15	Architects Cubed	NF	no factor from 2^63 to 2^64

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