397 161 727 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: 4 known prime factors

Factored

Factor	Digits	Bits	Date
3971617271	10	31.9	2008-02-27 10:57:23
197786540047	12	37.5	2008-02-27 10:57:23
2294763415331722711	19	61.0	2016-03-22 12:15:37
75288305862941251681	20	66.0	2019-09-05 12:08:42

History

Date	User	Type	Result
2024-07-08	mikr	NF	Redundant composite factor (3971617271*197786540047) from 2^68 to 2^73
2019-09-05	TJAOI	F	Factor: 75288305862941251681 / TF: 66-67
2016-03-22	TJAOI	F	Factor: 2294763415331722711 / TF: 60-61

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