1 724 507 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
300564325031	12	38.1	old
807703894577	12	39.6	2008-07-15 07:45:47
2990188805231706509017	22	71.3	2020-02-27 20:24:33

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	Shift	Type	Base
Verified (Factored)	2025-09-02	Kriesel	151ABA5999869CE7	0	1	3

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	alpertron	338D73A7A9766562	2	0	1	3
Verified (Factored)	2017-10-19	Oliver Kruse	338D73A7A9766562	2	84987	1	3
Verified	2020-02-28	Jinyuan Wang	151ABA5999869CE7	3	366147	5	3
Verified	2020-02-29	Team_Inspector	151ABA5999869CE7	3	1526708	5	3

History

Date	User	Type	Result
2025-09-03	Umbrarian	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-02	Kriesel	C-PRP	151ABA5999869CE7 PRP proof power = 6 PRP: Verified (Factored) Proof certified good
2020-02-29	Team_Inspector	C-PRP	M1724507/300564325031/807703894577/2990188805231706509017 : 151ABA5999869CE7 PRP: Verified PRP without proof (not generated)
2020-02-28	Jinyuan Wang	C-PRP	M1724507/300564325031/807703894577/2990188805231706509017 : 151ABA5999869CE7 PRP: Verified PRP without proof (not generated)
2020-02-27	kracker	F-ECM	Factor: 2990188805231706509017 / (ECM curve 1, B1=50000, B2=5000000, Sigma=8864723214032214)
2017-10-19	Oliver Kruse	C-PRP	M1724507/300564325031/807703894577 : 338D73A7A9766562 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1724507/300564325031/807703894577 : 338D73A7A9766562 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-07-15	J Feitsma	F	Factor: 807703894577