11 780 897 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
61566505546653034589833	23	75.7	2016-05-15 12:29:29

Status	Date	User	Residue	Shift
Verified (Factored)	2001-10-13	Binary Digits	1FA3E468A28BAE1E	10513776
Verified (Factored)	2004-07-26	Ars Technica Team Prime Rib	1FA3E468A28BAE1E	5352078

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-11-06	GAN	678B9116FA93AEC7	1	5255429	5	3

P-1 factors

Date	Factor	B1	B2
2016-05-15	61566505546653034589833	120000	2490000

History

Date	User	Type	Result
2021-11-06	curtisc	CERT	PRP Certification Proof certified good
2021-11-06	GAN	C-PRP	M11780897/61566505546653034589833 : 678B9116FA93AEC7 PRP proof power = 8 PRP: Verified Proof certified good
2016-05-15	Numberwang	F-PM1	Factor: 61566505546653034589833 / (P-1, B1=120000, B2=2490000, e=6, n=640K CUDAPm1 v0.20)
2016-02-08	VictordeHollander	NF	no factor from 2^66 to 2^67
2013-11-26	Nesowa	NF	no factor from 2^65 to 2^66
2013-10-25	lycorn	NF	no factor from 2^64 to 2^65