1 843 099 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
44941212366243485881	20	65.3	2008-10-14 09:25:24

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
Verified (Factored)		Joel Smith	8B2555028C50FB90	0
Verified (Factored)		Cornelius Caesar	8B2555028C50FB90	0

Status	Date	User	Residue	Shift	Type	Base
Verified (Factored)	2025-09-02	Kriesel	92C8E14D3096033B	0	1	3

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-04	Oliver Kruse	97358EFE7CC7468B	1	0	1	3
Verified	2017-11-06	ATH	97358EFE7CC7468B	1	1805327	1	3

History

Date	User	Type	Result
2025-09-03	Reithrodon	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-02	Kriesel	C-PRP	92C8E14D3096033B PRP proof power = 6 PRP: Verified (Factored) Proof certified good
2022-04-05	Joss	NF-PM1	B1=1000000, B2=188329050
2017-11-06	ATH	C-PRP	M1843099/44941212366243485881 : 97358EFE7CC7468B PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1843099/44941212366243485881 : 97358EFE7CC7468B PRP: Verified PRP without proof (not generated)
2008-10-14	Scott Kurowski	F-ECM	Factor: 44941212366243485881