4 876 427 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

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

Trial Factored to 2⁶⁸

TF target 2⁶⁵

Factored

Factor	Digits	Bits	Date
39011417	8	25.2	old
2266924125199	13	41.0	2008-09-30 21:36:29

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

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

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-09-20	kkmrkkblmbrbk	4080AA3F3A25B6ED	2	0	1	3
Verified	PRP without proof (not generated)	2018-05-02	storm5510	4080AA3F3A25B6ED	2	2646895	1	3

History

Date	User	Type	Result
2023-08-26	USAFSS	NF-PM1	B1=256000, B2=105522060
2018-05-02	storm5510	C-PRP	M4876427/39011417/2266924125199 : 4080AA3F3A25B6ED
2017-09-20	kkmrkkblmbrbk	C-PRP	M4876427/2266924125199/39011417 : 4080AA3F3A25B6ED
2008-09-30	markr	F	Factor: 2266924125199

Username
Password