1 396 991 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
539238527	9	29.0	old
759565310812751	15	49.4	2014-04-29 11:34:27
294419332771201965889	21	68.0	2019-01-11 18:44:36

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	31F83A51425AC96B	2	0	1	3
Verified (Factored)	2017-11-10	kkmrkkblmbrbk	31F83A51425AC96B	2	167760	1	3
Verified	2019-01-12	Jayder	C1C58103C4248CAE	3	151302	5	3
Verified	2019-01-14	arnaud	C1C58103C4248CAE	3	1260109	5	3

History

Date	User	Type	Result
2019-01-14	arnaud	C-PRP	M1396991/539238527/759565310812751/294419332771201965889 : C1C58103C4248CAE PRP: Verified PRP without proof (not generated)
2019-01-12	Jayder	C-PRP	M1396991/539238527/759565310812751/294419332771201965889 : C1C58103C4248CAE PRP: Verified PRP without proof (not generated)
2019-01-11	TJAOI	F-ECM	Factor: 294419332771201965889 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-10	kkmrkkblmbrbk	C-PRP	M1396991/539238527/759565310812751 : 31F83A51425AC96B PRP: Verified PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1396991/539238527/759565310812751 : 31F83A51425AC96B PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-04-29	TJAOI	F	Factor: 759565310812751