8 326 979 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 4 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶⁸

Factored

Factor	Digits	Bits	Date
376129641431	12	38.5	old
11621548241351	14	43.4	2013-12-20 18:22:49
583639640159759	15	49.1	2014-04-22 10:40:21
172193346333612553	18	57.3	2015-06-05 11:16:12

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-10-14	Oliver Kruse	B6A5D5A764CA2E09	4	1262222	5	3
Verified	PRP without proof (not generated)	2020-04-23	Luigi Morelli	B6A5D5A764CA2E09	4	6015154	5	3

History

Date	User	Type	Result
2024-03-06	Stef42	NF-PM1	B1=3000000, B2=6211055760
2020-04-23	Luigi Morelli	C-PRP	M8326979/376129641431/11621548241351/583639640159759/172193346333612553 : B6A5D5A764CA2E09
2018-10-14	Oliver Kruse	C-PRP	M8326979/376129641431/11621548241351/583639640159759/172193346333612553 : B6A5D5A764CA2E09
2015-06-05	TJAOI	F	Factor: 172193346333612553
2014-04-22	TJAOI	F	Factor: 583639640159759
2013-12-20	TJAOI	F	Factor: 11621548241351