1 859 531 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
371906201	9	28.5	old
1184479057951686746209	22	70.0	2020-09-30 05:35:31
372068558801276768444983	24	78.3	2021-07-23 11:17:57

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 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	DDF23713F811CCDF	1	0	1	3
Verified (Factored)	2017-11-07	kkmrkkblmbrbk	DDF23713F811CCDF	1	1783480	1	3
Verified (Factored)	2020-09-30	SRJ2877	F5DEAADC93C2039E	2	163750	5	3
Verified	2021-07-23	/r/counting	F5DEAADC93C2039E	3	905768	5	3

History

Date	User	Type	Result
2021-07-23	LOBES	CERT	PRP Certification Proof certified good
2021-07-23	/r/counting	C-PRP	M1859531/371906201/1184479057951686746209/372068558801276768444983 : F5DEAADC93C2039E PRP proof power = 7 PRP: Verified Proof certified good
2021-07-23	TJAOI	F-ECM	Factor: 372068558801276768444983 / (ECM curve 17, B1=50000, B2=6600000)
2020-09-30	Ben Delo	CERT	PRP Certification Proof certified good
2020-09-30	SRJ2877	C-PRP	M1859531/371906201/1184479057951686746209 : F5DEAADC93C2039E PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2020-09-30	nordi	F-ECM	Factor: 1184479057951686746209 / (ECM curve 1, B1=50000, B2=5000000, Sigma=1578520885202581)
2017-11-07	kkmrkkblmbrbk	C-PRP	M1859531/371906201 : DDF23713F811CCDF PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1859531/371906201 : DDF23713F811CCDF PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12