1 074 427 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
455557049	9	28.8	old
13829847555069033336209	23	73.6	2017-12-15 15:31:29

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	104 / 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)	2025-09-01	Kriesel	E5590AA12426B07E	0	1	3

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-28	Oliver Kruse	BF42F8E6B2647B10	1	0	1	3
Verified (Factored)	2017-10-16	Oliver Kruse	BF42F8E6B2647B10	1	479889	1	3
Verified	2017-12-17	Oliver Kruse	E5590AA12426B07E	2	539271	5	3
Verified	2017-12-18	kkmrkkblmbrbk	E5590AA12426B07E	2	953017	5	3

History

Date	User	Type	Result
2025-09-01	L Colebourn	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-01	Kriesel	C-PRP	E5590AA12426B07E PRP proof power = 6 PRP: Verified (Factored) Proof certified good
2024-08-21	cramsey87	NF-PM1	B1=3000000, B2=26869402560
2017-12-18	kkmrkkblmbrbk	C-PRP	M1074427/455557049/13829847555069033336209 : E5590AA12426B07E PRP: Verified PRP without proof (not generated)
2017-12-17	Oliver Kruse	C-PRP	M1074427/455557049/13829847555069033336209 : E5590AA12426B07E PRP: Verified PRP without proof (not generated)
2017-12-15	TJAOI	F-ECM	Factor: 13829847555069033336209 / (ECM curve 103, B1=50000, B2=5000000)
2017-10-16	Oliver Kruse	C-PRP	M1074427/455557049 : BF42F8E6B2647B10 PRP: Verified PRP without proof (not generated)
2017-09-28	Oliver Kruse	C-PRP	M1074427/455557049 : BF42F8E6B2647B10 PRP: Verified PRP without proof (not generated)