4 400 377 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
69944108996537662319	20	65.9	2012-04-05 04:43:40

ECM

Digits	B1	Curves
25	50000	96 / 280

Estimated T-Level: 21.7 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Gerall Kahla	780DD980C75642BE	0
Verified (Factored)	1999-12-08	Milen Kostov	780DD980C75642BE	3878627

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	7CECED22C86D7973	1	0	1	3
Verified	2018-02-09	Oliver Kruse	7CECED22C86D7973	1	3135231	1	3

History

Date	User	Type	Result
2023-04-15	Kevin_9611	NF-PM1	B1=260000, B2=195718380
2018-02-09	Oliver Kruse	C-PRP	M4400377/69944108996537662319 : 7CECED22C86D7973 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4400377/69944108996537662319 : 7CECED22C86D7973 PRP: Verified PRP without proof (not generated)
2012-04-05	Squeeky_Squirrel	F-PM1	Factor: 69944108996537662319
2012-03-23	Squeeky_Squirrel	NF-PM1	B1=105000, B2=1916250, E=6
2012-01-17	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-11-03	markr	NF	no factor from 2^61 to 2^62
2009-07-16	Carsten Kossendey	NF-PM1	B1=25000, B2=356250