7 118 117 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
9580977160867216251481039	25	83.0	2016-06-13 10:34:30

ECM

Digits	B1	Curves
25	50000	32 / 280

Estimated T-Level: 20.6 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1999-05-02	Stephen D. Clark	ABC79A7DC6C77EDD	523603
Verified (Factored)	2003-01-09	Daniel Swanson	ABC79A7DC6C77EDD	1677794
Verified (Factored)	2003-01-25	A. Kromat	ABC79A7DC6C77EDD	1291452

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-02-13	Oliver Kruse	8A6A6502D4C5CFC9	1	4751825	5	3
Verified	2019-03-19	ATH	8A6A6502D4C5CFC9	1	5859662	5	3

History

Date	User	Type	Result
2019-03-19	ATH	C-PRP	M7118117/9580977160867216251481039 : 8A6A6502D4C5CFC9 PRP: Verified PRP without proof (not generated)
2018-02-13	Oliver Kruse	C-PRP	M7118117/9580977160867216251481039 : 8A6A6502D4C5CFC9 PRP: Verified PRP without proof (not generated)
2016-06-13	mikr	F-ECM	Factor: 9580977160867216251481039 / (ECM curve 29, B1=50000, B2=5000000)
2016-03-20	mikr	NF-PM1	B1=5000000, B2=125000000, E=12
2013-07-02	Never Odd Or Even	NF	no factor from 2^72 to 2^73
2013-07-02	Never Odd Or Even	NF	no factor from 2^71 to 2^72
2013-03-13	Never Odd Or Even	NF	no factor from 2^70 to 2^71
2013-03-13	Never Odd Or Even	NF	no factor from 2^69 to 2^70
2013-03-13	Never Odd Or Even	NF	no factor from 2^68 to 2^69
2012-03-15	Never Odd Or Even	NF	no factor from 2^67 to 2^68
2012-03-15	Never Odd Or Even	NF	no factor from 2^66 to 2^67
2012-02-19	Never Odd Or Even	NF	no factor from 2^65 to 2^66
2012-02-19	Never Odd Or Even	NF	no factor from 2^64 to 2^65
2012-02-19	Never Odd Or Even	NF	no factor from 2^63 to 2^64
2011-12-31	Carsten Kossendey	NF-PM1	B1=450000, B2=13837500, E=12