2 301 743 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
4064938251816320951	19	61.8	2010-01-09 03:25:41

ECM

Digits	B1	Curves
25	50000	79 / 280

Estimated T-Level: 21.4 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Allan Schrum	5FB790A85933A830	0
Verified (Factored)	1999-09-07	Sean Gildea	5FB790A85933A830	669872

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-11	Oliver Kruse	897546C0C84C401A	1	0	1	3
Verified	2017-11-22	ATH	897546C0C84C401A	1	1657194	1	3

History

Date	User	Type	Result
2021-04-07	ViliamF	NF-PM1	B1=5000000, B2=505000000
2018-02-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2017-11-22	ATH	C-PRP	M2301743/4064938251816320951 : 897546C0C84C401A PRP: Verified PRP without proof (not generated)
2017-10-11	Oliver Kruse	C-PRP	M2301743/4064938251816320951 : 897546C0C84C401A PRP: Verified PRP without proof (not generated)
2010-01-09	KAMCOBILL	F-ECM	Factor: 4064938251816320951
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61