1 788 439 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
6308052203705479	16	52.5	old
210974398669300422679	21	67.5	2018-12-11 18:13:29
25375753730064730600117361	26	84.4	2015-06-23 20:23:43

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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)	2017-10-05	Oliver Kruse	DB49B3602E361157	2	0	1	3
Verified (Factored)	2017-11-11	kkmrkkblmbrbk	DB49B3602E361157	2	594143	1	3
Verified	2018-12-13	oodaira	3AC5CA8172252B41	3	1082723	5	3
Verified	2018-12-14	Zero	3AC5CA8172252B41	3	740678	5	3

P-1 factors

Date	Factor	B1	B2
2015-06-23	25375753730064730600117361	500000	15000000

History

Date	User	Type	Result
2018-12-14	Zero	C-PRP	M1788439/6308052203705479/25375753730064730600117361/210974398669300422679 : 3AC5CA8172252B41 PRP: Verified PRP without proof (not generated)
2018-12-13	oodaira	C-PRP	M1788439/6308052203705479/25375753730064730600117361/210974398669300422679 : 3AC5CA8172252B41 PRP: Verified PRP without proof (not generated)
2018-12-11	Chang Chia-Tche	F-ECM	Factor: 210974398669300422679 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-11	kkmrkkblmbrbk	C-PRP	M1788439/6308052203705479/25375753730064730600117361 : DB49B3602E361157 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1788439/6308052203705479/25375753730064730600117361 : DB49B3602E361157 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1788439/6308052203705479/25375753730064730600117361 : DB49B3602E361157 PRP without proof (not generated)
2015-06-23	alpertron	F-PM1	Factor: 25375753730064730600117361 / (P-1, B1=500000, B2=15000000, E=12)