256 665 907 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
78150825763410047953	20	66.1	2015-12-20 21:10:33

History

Date	User	Type	Result
2015-12-20	Alex_soldier	F	Factor: 78150825763410047953 / TF: 66-67
2013-11-15	sasaki3	NF	no factor from 2^65 to 2^66
2011-08-04	Damian Silvestre	NF	no factor from 2^64 to 2^65
2010-03-09	sasaki3	NF	no factor from 2^63 to 2^64
2010-03-09	sasaki3	NF	no factor from 2^62 to 2^63

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