4 139 159 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
5394855665831	13	42.3	old
9946399077001	13	43.2	2008-09-30 21:34:34
28574073705279006659427391	26	84.6	2022-11-02 20:21:57

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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-11-15	Oliver Kruse	891E2775EB3D6C80	2	3243401	5	3
Verified (Factored)	2017-12-26	kkmrkkblmbrbk	891E2775EB3D6C80	2	2322827	5	3
Verified	2022-11-07	Perig	891E2775EB3D6C80	3	778724	5	3

P-1 factors

Date	Factor	B1	B2
2022-11-02	28574073705279006659427391	200000	135233670

History

Date	User	Type	Result
2022-11-09	KS2022	CERT	PRP Certification Proof certified good
2022-11-07	Perig	C-PRP	M4139159/5394855665831/9946399077001/28574073705279006659427391 : 891E2775EB3D6C80 PRP proof power = 7 PRP: Verified Proof certified good
2022-11-02	USAFSS	F-PM1	Factor: 28574073705279006659427391 / (P-1, B1=200000, B2=135233670)
2017-12-26	kkmrkkblmbrbk	C-PRP	M4139159/5394855665831/9946399077001 : 891E2775EB3D6C80 PRP: Verified (Factored) PRP without proof (not generated)
2017-11-15	Oliver Kruse	C-PRP	M4139159/5394855665831/9946399077001 : 891E2775EB3D6C80 PRP: Verified (Factored) PRP without proof (not generated)
2008-09-30	markr	F	Factor: 9946399077001