2 895 857 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
4317653286433	13	42.0	old
193681021489081215737	21	67.4	2018-05-25 11:10:11

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-23	Oliver Kruse	73820C0D9D76438B	1	671431	5	3
Verified (Factored)	2017-12-08	kkmrkkblmbrbk	73820C0D9D76438B	1	1700470	5	3
Verified	2018-05-25	_p95holder_	73820C0D9D76438B	2	1593138	5	3

History

Date	User	Type	Result
2022-12-03	USAFSS	NF-PM1	B1=320000, B2=243437040
2018-05-25	_p95holder_	C-PRP	M2895857/4317653286433/193681021489081215737 : 73820C0D9D76438B PRP: Verified PRP without proof (not generated)
2018-05-25	Martin Russell	F-ECM	Factor: 193681021489081215737 / (ECM curve 3, B1=50000, B2=5000000)
2017-12-08	kkmrkkblmbrbk	C-PRP	M2895857/4317653286433 : 73820C0D9D76438B PRP: Verified PRP without proof (not generated)
2017-10-23	Oliver Kruse	C-PRP	M2895857/4317653286433 : 73820C0D9D76438B PRP: Verified PRP without proof (not generated)