11 639 249 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 2⁷⁵

TF target 2⁶⁸

P-1

B1 =	14013658
B2 =	119800600920

ECM

Digits	B1	Curves
25	50000	196 / 280

Estimated T-Level: 23.5 ⓘ

Status	Date	User	Residue	Shift
Verified	2001-04-21	Joachim Hertel	42C2AD7C43C07AF1	8041511
Verified	2004-05-11	Stephen Sellars	42C2AD7C43C07AF1	10445042

History

Date	User	Type	Result
2025-03-10	yuriy_5-1	NF	no factor from 2^74 to 2^75
2024-12-06	yuriy_5-1	NF	no factor from 2^73 to 2^74
2024-09-02	yuriy_5-1	NF	no factor from 2^72 to 2^73
2024-08-27	yuriy_5-1	NF-PM1	B1=14013658, B2=119800600920
2024-04-22	yuriy_5-1	NF-PM1	B1=6413941, B2=2993506230
2022-12-08	Naegi Makoto	NF	no factor from 2^71 to 2^72
2021-08-22	Andrew B	NF	no factor from 2^70 to 2^71
2021-08-09	SRBase	NF	no factor from 2^69 to 2^70
2018-01-03	ramgeis	NF	no factor from 2^68 to 2^69
2018-01-03	ramgeis	NF	no factor from 2^67 to 2^68
2016-01-30	VictordeHollander	NF	no factor from 2^66 to 2^67
2014-12-20	Nesowa	NF	no factor from 2^65 to 2^66
2013-11-04	lycorn	NF	no factor from 2^64 to 2^65
2012-03-24	James Heinrich	NF-PM1	B1=225000, B2=5400000, E=6