1 867 601 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
515607284081	12	38.9	old
80000233390682861297647	23	76.1	2021-03-23 06:03:34

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	8691CE7846BC5D4F	1	0	1	3
Verified (Factored)	2017-11-07	kkmrkkblmbrbk	8691CE7846BC5D4F	1	994505	1	3
Verified	2021-03-26	Joe S.	6E504D101D2D99BF	2	838487	5	3

History

Date	User	Type	Result
2021-03-26	Ben Delo	CERT	PRP Certification Proof certified good
2021-03-26	Joe S.	C-PRP	M1867601/515607284081/80000233390682861297647 : 6E504D101D2D99BF PRP proof power = 7 PRP: Verified Proof certified good
2021-03-23	_p95holder_	F-ECM	Factor: 80000233390682861297647 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-07	kkmrkkblmbrbk	C-PRP	M1867601/515607284081 : 8691CE7846BC5D4F PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1867601/515607284081 : 8691CE7846BC5D4F PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12