991 185 421 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: 1 known prime factor

Trial Factored to 2⁷¹

TF target 2⁸⁵

Factored

Factor	Digits	Bits	Date
3658275136816551577	19	61.7	2015-11-10 14:49:18

History

Date	User	Type	Result
2022-07-07	LordJulius	NF	no factor TF: 62-64
2015-11-10	TJAOI	F	Factor: 3658275136816551577
2013-10-07	ramgeis	NF	no factor TF: 67-71
2012-03-19	lindee	NF	no factor TF: 66-67
2011-05-26	lindee	NF	no factor TF: 65-66
2010-09-12	linded	NF	no factor TF: 64-65

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