11 566 249 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 2⁶⁸

P-1

B1 =	2500000
B2 =	7054972470

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

Status	Date	User	Residue	Shift
Verified	2001-06-09	Stephen Wood	715DE7B12F3C5FA4	6284499
Verified	2004-05-11	EDNY	715DE7B12F3C5FA4	3696943

History

Date	User	Type	Result
2024-11-17	TheJudger	NF	no factor from 2^72 to 2^73
2024-04-26	linament	NF-PM1	B1=2500000, B2=7054972470
2024-04-25	linament	NF-PM1	B1=2500000
2023-01-19	Naegi Makoto	NF	no factor from 2^71 to 2^72
2021-10-08	mikr	NF	no factor from 2^70 to 2^71
2021-09-29	lycorn	NF	no factor from 2^69 to 2^70
2018-10-19	Sid & Andy	NF-PM1	B1=1500000, B2=30000000, E=12
2018-01-10	ramgeis	NF	no factor from 2^68 to 2^69
2018-01-10	ramgeis	NF	no factor from 2^67 to 2^68
2016-01-15	VictordeHollander	NF	no factor from 2^66 to 2^67
2014-12-20	Nesowa	NF	no factor from 2^65 to 2^66
2013-11-06	lycorn	NF	no factor from 2^64 to 2^65