4 581 233 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 2⁷³

TF target 2⁶⁵

P-1

B1 =	4400000
B2 =	11419636800

ECM

Digits	B1	Curves
25	50000	158 / 280

Estimated T-Level: 22.8 ⓘ

Status	Date	User	Residue	Shift
Verified		Sturle Sunde	67694805A22973D7	0
Verified	1998-12-06	INTERSHOP Communications	67694805A22973D7	0
Verified	2015-11-14	MadPoo	67694805A22973D7	2552960

History

Date	User	Type	Result
2023-02-16	Sid & Andy	NF-PM1	B1=4400000, B2=11419636800
2021-04-10	Dylan Delgado	NF-PM1	B1=480000, B2=14400000, e=12
2021-02-18	-Anonymous-	NF	no factor from 2^72 to 2^73
2021-02-05	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-01-27	-Anonymous-	NF	no factor from 2^70 to 2^71
2021-01-27	-Anonymous-	NF	no factor from 2^69 to 2^70
2021-01-27	-Anonymous-	NF	no factor from 2^68 to 2^69
2018-05-21	ramgeis	NF	no factor from 2^67 to 2^68
2018-05-21	ramgeis	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-11-14	MadPoo	C-LL	67694805A22973D7
2015-07-03	snme2pm1	NF	no factor from 2^65 to 2^66
2014-12-31	lycorn	NF	no factor from 2^64 to 2^65
2014-12-30	Jayder	NF	no factor from 2^63 to 2^64
2012-01-08	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-12-08	Squeeky_Squirrel	NF-PM1	B1=120000, B2=2490000, E=6
2010-08-21	markr	NF	no factor from 2^61 to 2^62