11 608 661 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
7760121195385325995319879	25	82.7	2017-11-05 10:58:25

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2001-03-05	Keith Jobe	1E822213E81A5C08	36953
Verified (Factored)	2004-04-29	Oleg V.Cat	1E822213E81A5C08	9025637

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-09-17	GAN	2CA1B14C80C8C1B3	1	8711454	5	3

History

Date	User	Type	Result
2021-09-17	curtisc	CERT	PRP Certification Proof certified good
2021-09-17	GAN	C-PRP	M11608661/7760121195385325995319879 : 2CA1B14C80C8C1B3 PRP proof power = 8 PRP: Verified Proof certified good
2017-11-05	ATH	F-ECM	Factor: 7760121195385325995319879 / (ECM curve 1, B1=50000, B2=5000000)
2016-01-15	VictordeHollander	NF	no factor from 2^66 to 2^67
2014-08-27	NR	NF	no factor from 2^65 to 2^66
2013-11-05	lycorn	NF	no factor from 2^64 to 2^65