1 747 799 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
84434211372106049	17	56.2	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	108 / 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
Verified (Factored)		James Welsh	0637DB9A9E3E204E	0
Verified (Factored)	1997-11-29	Luke Welsh	0637DB9A9E3E204E	0

Status	Date	User	Residue	Shift	Type	Base
Verified (Factored)	2025-09-02	Kriesel	35D5F8C039F85D5D	0	1	3

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-03	Oliver Kruse	3B067FA70891EE76	1	0	1	3
Verified	2017-11-03	kkmrkkblmbrbk	3B067FA70891EE76	1	70550	1	3

History

Date	User	Type	Result
2025-09-03	RayG	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-02	Kriesel	C-PRP	35D5F8C039F85D5D PRP proof power = 6 PRP: Verified (Factored) Proof certified good
2017-11-03	kkmrkkblmbrbk	C-PRP	M1747799/84434211372106049 : 3B067FA70891EE76 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1747799/84434211372106049 : 3B067FA70891EE76 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12