7 659 749 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 2⁶⁷

P-1

B1 =	3000000
B2 =	10362966900

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

Status	Date	User	Residue	Shift
Verified	1999-07-04	John Orchard	88642546216DC647	4959786
Verified	2002-05-05	Northwestern College	88642546216DC647	6456847

History

Date	User	Type	Result
2023-03-10	DRobinsonPE	NF-PM1	B1=3000000, B2=10362966900
2021-05-03	-Anonymous-	NF	no factor from 2^72 to 2^73
2021-05-02	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-04-08	-Anonymous-	NF	no factor from 2^70 to 2^71
2021-04-08	-Anonymous-	NF	no factor from 2^69 to 2^70
2020-03-20	TJAOI	NF	no factor from 2^68 to 2^69
2018-07-31	ramgeis	NF	no factor from 2^67 to 2^68
2016-09-17	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-06-12	VictordeHollander	NF	no factor from 2^65 to 2^66
2013-12-13	David Campeau	NF	no factor from 2^64 to 2^65
2013-10-11	Nesowa	NF	no factor from 2^63 to 2^64
2011-04-19	James Heinrich	NF-PM1	B1=145000, B2=3226250, E=6