1 325 663 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
252811888079	12	37.9	old
1787145048814198072687	22	70.6	2018-07-27 12:43:41
14931808275742669109047	23	73.7	2015-01-28 18:46:45

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	Oliver Kruse	ECFC5A9C3DC95F43	2	0	1	3
Verified (Factored)	2017-10-23	kkmrkkblmbrbk	ECFC5A9C3DC95F43	2	582270	1	3
Verified	2018-07-28	_p95holder_	434DF6D63C9E3B81	3	6783	5	3
Verified	2018-07-28	trebor	434DF6D63C9E3B81	3	71116	5	3

P-1 factors

Date	Factor	B1	B2
2015-01-28	14931808275742669109047	500000	15000000

History

Date	User	Type	Result
2018-07-28	trebor	C-PRP	M1325663/252811888079/14931808275742669109047/1787145048814198072687 : 434DF6D63C9E3B81 PRP: Verified PRP without proof (not generated)
2018-07-28	_p95holder_	C-PRP	M1325663/252811888079/14931808275742669109047/1787145048814198072687 : 434DF6D63C9E3B81 PRP: Verified PRP without proof (not generated)
2018-07-27	TJAOI	F-ECM	Factor: 1787145048814198072687 / (ECM curve 20, B1=50000, B2=5000000)
2017-10-23	kkmrkkblmbrbk	C-PRP	M1325663/252811888079/14931808275742669109047 : ECFC5A9C3DC95F43 PRP: Verified PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1325663/252811888079/14931808275742669109047 : ECFC5A9C3DC95F43 PRP: Verified PRP without proof (not generated)
2015-01-28	alpertron	F-PM1	Factor: 14931808275742669109047 / (P-1, B1=500000, B2=15000000, E=12)