11 231 293 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 =	10000000
B2 =	20021278200

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

Status	Date	User	Residue	Shift
Verified	2001-06-09	Tom Wallace	36C4E0193C9B3449	4916751
Verified	2004-02-14	Nick Fortino	36C4E0193C9B3449	7336134

History

Date	User	Type	Result
2025-02-07	James Heinrich	NF	no factor from 2^72 to 2^73
2024-10-18	vsh	NF-PM1	B1=10000000, B2=20021278200
2024-07-08	vsh	NF	no factor from 2^72 to 2^73
2021-12-28	LaurV	NF-PM1	B1=6189107, B2=185673210
2021-10-30	SRBase	NF	no factor from 2^71 to 2^72
2021-08-14	SRBase	NF	no factor from 2^70 to 2^71
2021-08-07	SRBase	NF	no factor from 2^69 to 2^70
2017-12-27	ramgeis	NF	no factor from 2^68 to 2^69
2017-12-27	ramgeis	NF	no factor from 2^67 to 2^68
2015-12-28	VictordeHollander	NF	no factor from 2^66 to 2^67
2015-05-08	Nesowa	NF	no factor from 2^65 to 2^66
2013-11-22	lycorn	NF	no factor from 2^64 to 2^65
2012-05-17	James Heinrich	NF-PM1	B1=215000, B2=5160000, E=6