2 420 569 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
62684242486997755310903	23	75.7	2009-02-06 19:49:49

ECM

Digits	B1	Curves
25	50000	67 / 280

Estimated T-Level: 21.2 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Ken Kriesel	F1066295451A9996	0
Verified (Factored)		Cornelius Caesar	F1066295451A9996	0

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-13	Oliver Kruse	194670CBDD688A22	1	76518	5	3
Verified	2017-11-26	ATH	194670CBDD688A22	1	2140387	5	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-26	ATH	C-PRP	M2420569/62684242486997755310903 : 194670CBDD688A22 PRP: Verified PRP without proof (not generated)
2017-10-13	Oliver Kruse	C-PRP	M2420569/62684242486997755310903 : 194670CBDD688A22 PRP: Verified PRP without proof (not generated)
2009-02-06	alan145	F-ECM	Factor: 62684242486997755310903
2009-01-12	Sturle Sunde	NF	no factor from 2^60 to 2^61