4 872 001 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
40392599571216541073	20	65.1	old
417794197058152290445591	24	78.5	2019-07-14 02:07:42

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)	1998-05-08	Matthias Müller	EC6D021D558D653B	0

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	99FE07F5BF170249	1	0	1	3
Verified (Factored)	2018-04-02	Oliver Kruse	99FE07F5BF170249	1	1215376	1	3
Verified	2019-07-14	Niels_Mache_Nextcloud	17C2903BD5C9DFE0	2	1900165	5	3
Verified	2019-07-15	marssystems	17C2903BD5C9DFE0	2	3047632	5	3

History

Date	User	Type	Result
2023-08-19	USAFSS	NF-PM1	B1=256000, B2=105522060
2019-07-15	marssystems	C-PRP	M4872001/40392599571216541073/417794197058152290445591 : 17C2903BD5C9DFE0 PRP: Verified PRP without proof (not generated)
2019-07-14	Niels_Mache_Nextcloud	C-PRP	M4872001/40392599571216541073/417794197058152290445591 : 17C2903BD5C9DFE0 PRP: Verified PRP without proof (not generated)
2019-07-14	MarkS	F-ECM	Factor: 417794197058152290445591 / (ECM curve 3, B1=50000, B2=5000000)
2018-04-02	Oliver Kruse	C-PRP	M4872001/40392599571216541073 : 99FE07F5BF170249 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4872001/40392599571216541073 : 99FE07F5BF170249 PRP: Verified PRP without proof (not generated)