4 683 377 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

TF

No factors below 2⁷²

TF target 2⁶⁵

P-1

B1 =	4300000
B2 =	11209383900

ECM

Digits	B1	Curves
25	50000	123 / 280

Estimated T-Level: 22.2 ⓘ

Status	Date	User	Residue	Shift
Verified	1999-01-29	Steve Purcell	7E306676FC0565DF	0
Verified	2000-01-04	Murphy	7E306676FC0565DF	4047506

History

Date	User	Type	Result
2022-12-08	Sid & Andy	NF-PM1	B1=4300000, B2=11209383900
2021-11-03	Aaron Haviland	NF-PM1	B1=480000, B2=14400000, e=12
2021-03-23	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-03-22	-Anonymous-	NF	no factor from 2^70 to 2^71
2021-03-22	-Anonymous-	NF	no factor from 2^69 to 2^70
2021-03-22	-Anonymous-	NF	no factor from 2^68 to 2^69
2018-10-10	Yxinity	NF	no factor from 2^67 to 2^68
2018-06-03	BloodERazor	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-07-09	snme2pm1	NF	no factor from 2^65 to 2^66
2015-02-17	monst	NF	no factor from 2^64 to 2^65
2015-02-17	Jayder	NF	no factor from 2^63 to 2^64
2013-08-05	Squeeky_Squirrel	NF-PM1	B1=145000, B2=2972500, E=6
2011-12-11	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-07-08	markr	NF	no factor from 2^61 to 2^62
2009-09-04	Carsten Kossendey	NF-PM1	B1=25000, B2=375000