2 008 961 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
655176580745959	15	49.2	old
3081857554597781695657	22	71.4	2022-10-19 03:16:54

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	166 / 640

Estimated T-Level: 26.3 ⓘ

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

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	DA71196E356DD2F1	1	0	1	3
Verified (Factored)	2017-11-13	ATH	DA71196E356DD2F1	1	347385	1	3
Verified	2022-10-19	Kevin_9611	15A36B06A3FDC0FF	2	1829051	5	3

History

Date	User	Type	Result
2022-10-19	curtisc	CERT	PRP Certification Proof certified good
2022-10-19	Kevin_9611	C-PRP	M2008961/655176580745959/3081857554597781695657 : 15A36B06A3FDC0FF PRP proof power = 7 PRP: Verified Proof certified good
2022-10-19	_p95holder_	F-ECM	Factor: 3081857554597781695657 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-13	ATH	C-PRP	M2008961/655176580745959 : DA71196E356DD2F1 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M2008961/655176580745959 : DA71196E356DD2F1 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12