977 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 5 known prime factors. Cofactor is PRP (Probable-Prime).

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
867577	6	19.7	old
1813313	7	20.8	old
2069655374719577273	19	60.8	old
49858990580788843054012690078841	32	105.3	old
23830405750609887318420248635858165476368020607396633699141951	62	203.9	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Factored	No proof (small exponent)	2024-09-06	George Woltman	PRP_PRP_PRP_PRP_	5	0	1	3

History

Date	User	Type	Result
2024-09-06	George Woltman	P-PRP	M977/867577/1813313/2069655374719577273/49858990580788843054012690078841/23830405750609887318420248635858165476368020607396633699141951 PRP Cofactor
2009-05-17	-anonymous-	F-PM1	Factor: 3255958350303509528327171937073
2006-08-14	Gerry Snyder	F-PM1	Factor: 2069655374719577273
2000-08-01	-anonymous-	F-PM1	Factor: 3255958350303509528327171937073