1 901 131 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
465644015831	12	38.8	old
354392909172288135393089	24	78.2	2021-07-15 09:23:23

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)	2017-10-04	Oliver Kruse	0F838B539DDE10A6	1	0	1	3
Verified (Factored)	2017-11-09	ATH	0F838B539DDE10A6	1	277886	1	3
Verified	2021-07-15	/r/counting	9736336D732F3BD9	2	95931	5	3

History

Date	User	Type	Result
2021-07-15	Chad Steenerson	CERT	PRP Certification Proof certified good
2021-07-15	/r/counting	C-PRP	M1901131/465644015831/354392909172288135393089 : 9736336D732F3BD9 PRP proof power = 7 PRP: Verified Proof certified good
2021-07-15	_p95holder_	F-ECM	Factor: 354392909172288135393089 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-09	ATH	C-PRP	M1901131/465644015831 : 0F838B539DDE10A6 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1901131/465644015831 : 0F838B539DDE10A6 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12