11 224 637 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 2⁷⁴

TF target 2⁶⁸

TF below 2^97 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	10000000
B2 =	20000014650

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	230 / 1566

Estimated T-Level: 30.7 ⓘ

Status	Date	User	Residue	Shift
Verified	2002-06-29	C. Cooper / S. Boone	90C38679C3D03AB7	10508448
Verified	2004-02-23	Marc Getty / Phil Fizur	90C38679C3D03AB7	7117219

History

Date	User	Type	Result
2025-10-14	vsh	NF	no factor from 2^73 to 2^74
2025-07-25	vsh	NF-PM1	B1=10000000, B2=20000014650
2025-02-06	James Heinrich	NF	no factor from 2^72 to 2^73
2024-07-26	vsh	NF	no factor from 2^72 to 2^73
2024-04-29	vsh	NF-PM1	B1=10000000, B2=16787266650
2024-04-25	vsh	NF-PM1	B1=4300000, B2=5975406360
2024-04-05	vsh	NF-PM1	B1=2150000, B2=1220264760
2021-11-02	SRBase	NF	no factor from 2^71 to 2^72
2021-08-30	SRBase	NF	no factor from 2^70 to 2^71
2021-08-16	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
2015-03-14	Numberwang	NF	no factor from 2^65 to 2^66
2013-11-23	lycorn	NF	no factor from 2^64 to 2^65
2012-05-17	James Heinrich	NF-PM1	B1=215000, B2=5160000, E=6