4 209 503 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
50724511151	11	35.6	old
92811776926803486161	20	66.3	2018-12-17 04:52:53

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	397E761E2BB833BD	1	0	1	3
Verified (Factored)	2018-01-22	alan145	397E761E2BB833BD	1	3230227	1	3
Verified	2018-12-20	Luigi Morelli	CF69234CDCB6038C	2	3702948	5	3
Verified	2018-12-22	Oliver Kruse	CF69234CDCB6038C	2	3713631	5	3

History

Date	User	Type	Result
2022-09-30	USAFSS	NF-PM1	B1=200000, B2=135233670
2018-12-22	Oliver Kruse	C-PRP	M4209503/50724511151/92811776926803486161 : CF69234CDCB6038C PRP: Verified PRP without proof (not generated)
2018-12-20	Luigi Morelli	C-PRP	M4209503/50724511151/92811776926803486161 : CF69234CDCB6038C PRP: Verified PRP without proof (not generated)
2018-12-17	MarkS	F-ECM	Factor: 92811776926803486161 / (ECM curve 1, B1=50000, B2=5000000)
2018-01-22	alan145	C-PRP	M4209503/50724511151 : 397E761E2BB833BD PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4209503/50724511151 : 397E761E2BB833BD PRP: Verified PRP without proof (not generated)