11 420 377 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 2⁷³

TF target 2⁶⁸

P-1

B1 =	1069000
B2 =	931421400

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

Status	Date	User	Residue	Shift
Verified	2001-07-17	Keith Pomakis	9F6F492C21BBC38B	6511536
Verified	2004-03-08	Marc Getty	9F6F492C21BBC38B	9986089

History

Date	User	Type	Result
2024-11-17	TheJudger	NF	no factor from 2^72 to 2^73
2024-04-15	chevron	NF-PM1	B1=1069000, B2=931421400
2023-02-02	One Man	NF	no factor from 2^71 to 2^72
2021-08-14	SRBase	NF	no factor from 2^70 to 2^71
2021-08-06	SRBase	NF	no factor from 2^69 to 2^70
2018-01-01	ramgeis	NF	no factor from 2^68 to 2^69
2018-01-01	ramgeis	NF	no factor from 2^67 to 2^68
2016-02-13	Yxinity	NF	no factor from 2^66 to 2^67
2015-02-25	Nesowa	NF	no factor from 2^65 to 2^66
2013-11-17	lycorn	NF	no factor from 2^64 to 2^65
2012-02-17	James Heinrich	NF-PM1	B1=220000, B2=5280000, E=6