7 985 843 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
30902416648779599761	20	64.7	2013-02-01 13:29:05

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1999-10-07	Jeff Johnson	6587937ACA4CAED8	4278950
Verified (Factored)	2002-09-07	Clifton Wood	6587937ACA4CAED8	1026643

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-06-30	Oliver Kruse	DC491582F79170DE	1	3228163	5	3
Verified	2019-12-20	ATH	DC491582F79170DE	1	3214170	5	3

History

Date	User	Type	Result
2019-12-20	ATH	C-PRP	M7985843/30902416648779599761 : DC491582F79170DE PRP: Verified PRP without proof (not generated)
2018-06-30	Oliver Kruse	C-PRP	M7985843/30902416648779599761 : DC491582F79170DE PRP: Verified PRP without proof (not generated)
2013-02-01	Dmitry B. Khachaturov	F-ECM	Factor: 30902416648779599761
2012-06-26	firejuggler	NF-PM1	B1=100000, B2=1950000, E=6