2 051 653 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
10308718155781362537137	23	73.1	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	154 / 640

Estimated T-Level: 26.2 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Joe Decker	B5C512A4D5C31428	0
Verified (Factored)	1999-02-07	Jakob Trier	B5C512A4D5C31428	1549459

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-06	Oliver Kruse	75A9BD56611B5A8E	1	0	1	3
Verified	2017-11-15	kkmrkkblmbrbk	75A9BD56611B5A8E	1	322177	1	3

History

Date	User	Type	Result
2017-11-15	kkmrkkblmbrbk	C-PRP	M2051653/10308718155781362537137 : 75A9BD56611B5A8E PRP: Verified PRP without proof (not generated)
2017-10-06	Oliver Kruse	C-PRP	M2051653/10308718155781362537137 : 75A9BD56611B5A8E PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12