4 332 079 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
56045429895126647469001	23	75.6	2013-03-16 17:18:56

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-03-23	pepito100	4775DFAEC2AFBE54	0
Bad	1999-11-04	Jose Manuel Garcia	0B814E2FC4675B17	672142
Verified (Factored)	2001-01-08	Marc Getty / Phil Fizur	4775DFAEC2AFBE54	3840865

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	B8AD4F7A3307FE25	1	0	1	3
Verified	2018-02-01	Oliver Kruse	B8AD4F7A3307FE25	1	3979828	1	3

History

Date	User	Type	Result
2023-10-03	USAFSS	NF-PM1	B1=327000, B2=173770740
2018-02-01	Oliver Kruse	C-PRP	M4332079/56045429895126647469001 : B8AD4F7A3307FE25 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4332079/56045429895126647469001 : B8AD4F7A3307FE25 PRP: Verified PRP without proof (not generated)
2013-03-16	Torchwood Institute	F-ECM	Factor: 56045429895126647469001
2012-01-14	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-12-05	Joss	NF	no factor from 2^61 to 2^62
2010-09-01	markr	NF-PM1	B1=95000, B2=2090000, E=6