2 407 277 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
1169889910935767363558423	25	80.0	2014-03-02 22:47:01

ECM

Digits	B1	Curves
25	50000	67 / 280

Estimated T-Level: 21.2 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Joerg Pietschmann	1F64EE215AA87215	0
Verified (Factored)		Stephen Wood	1F64EE215AA87215	0
Verified (Factored)	1999-06-06	Timothy S. Larson	1F64EE215AA87215	769572

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-13	kkmrkkblmbrbk	B44A6D40B254B0FB	1	2229130	5	3
Verified	2017-11-03	Oliver Kruse	B44A6D40B254B0FB	1	2220154	5	3

P-1 factors

Date	Factor	B1	B2
2014-03-02	1169889910935767363558423	3102822	43439508

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-03	Oliver Kruse	C-PRP	M2407277/1169889910935767363558423 : B44A6D40B254B0FB PRP: Verified PRP without proof (not generated)
2017-10-13	kkmrkkblmbrbk	C-PRP	M2407277/1169889910935767363558423 : B44A6D40B254B0FB PRP: Verified PRP without proof (not generated)
2014-03-02	mikr	F-PM1	Factor: 1169889910935767363558423
2013-12-04	Jerry Hallett	NF	no factor from 2^62 to 2^63
2012-06-03	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-12-21	markr	NF-PM1	B1=95000, B2=1923750, E=6
2010-11-16	Joss	NF-PM1	B1=20000
2010-11-09	Joss	NF-PM1	B1=15000
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61