4 039 663 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
4336949520003157899601	22	71.9	old
25216756628274791740431793	26	84.4	2022-09-04 08:43:39

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	Date	User	Residue	Shift
Verified (Factored)	1998-10-29	Rob Hooft	11D817ADFBCD4607	0
Verified (Factored)	1999-10-15	Jim Eves	11D817ADFBCD4607	886761

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	E26B000009EDB0A7	1	0	1	3
Verified (Factored)	2018-01-07	Oliver Kruse	E26B000009EDB0A7	1	2668842	1	3
Verified	2022-09-10	Poao	E8F6B1581CE3B59B	2	495820	5	3

P-1 factors

Date	Factor	B1	B2
2022-09-04	25216756628274791740431793	225000	119776800

History

Date	User	Type	Result
2022-09-10	Team_Inspector	CERT	PRP Certification Proof certified good
2022-09-10	Poao	C-PRP	M4039663/4336949520003157899601/25216756628274791740431793 : E8F6B1581CE3B59B PRP proof power = 7 PRP: Verified Proof certified good
2022-09-04	USAFSS	F-PM1	Factor: 25216756628274791740431793 / (P-1, B1=225000, B2=119776800)
2018-01-07	Oliver Kruse	C-PRP	M4039663/4336949520003157899601 : E26B000009EDB0A7 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4039663/4336949520003157899601 : E26B000009EDB0A7 PRP: Verified (Factored) PRP without proof (not generated)