1 392 103 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
31113535460473	14	44.8	old
42878445707807	14	45.3	2008-08-26 19:53:32
5594315976987607	16	52.3	2014-08-03 11:35:01

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 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	8444D49870379689	0	1	3

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-05	Oliver Kruse	A5D6B09BEC380943	3	0	1	3
Verified	2017-10-25	kkmrkkblmbrbk	A5D6B09BEC380943	3	656070	1	3

History

Date	User	Type	Result
2025-09-03	Carlos Pinho	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-01	Kriesel	C-PRP	8444D49870379689 PRP proof power = 6 PRP: Verified (Factored) Proof certified good
2024-12-17	James Heinrich	NF-PM1	B1=156000, B2=1312799670
2017-10-25	kkmrkkblmbrbk	C-PRP	M1392103/31113535460473/42878445707807/5594315976987607 : A5D6B09BEC380943 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1392103/31113535460473/42878445707807/5594315976987607 : A5D6B09BEC380943 PRP: Verified PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1392103/31113535460473/42878445707807/5594315976987607 : A5D6B09BEC380943 PRP without proof (not generated)
2014-08-03	TJAOI	F	Factor: 5594315976987607
2008-08-26	-Anonymous-	F	Factor: 42878445707807