6 957 133 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
959808074596694080271	21	69.7	2012-09-01 03:37:39

ECM

Digits	B1	Curves
25	50000	33 / 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)	2000-01-04	Kevin	640AA8FDC5CA8976	4079653
Verified (Factored)	2001-10-13	Eric Petroelje	640AA8FDC5CA8976	3415005

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-01-28	Oliver Kruse	830EF3597E2A10B4	1	3209664	5	3
Verified	2019-02-11	arnaud	830EF3597E2A10B4	1	2992950	5	3

History

Date	User	Type	Result
2019-02-11	arnaud	C-PRP	M6957133/959808074596694080271 : 830EF3597E2A10B4 PRP: Verified PRP without proof (not generated)
2018-01-28	Oliver Kruse	C-PRP	M6957133/959808074596694080271 : 830EF3597E2A10B4 PRP: Verified PRP without proof (not generated)
2012-09-01	Torchwood Institute	F-ECM	Factor: 959808074596694080271
2011-12-13	James Heinrich	NF-PM1	B1=130000, B2=2827500, E=6