1 808 497 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
39979002327738137	17	55.2	old
2347183854347372281	19	61.0	2015-07-13 10:11:45
9706123523375446467647	22	73.0	2020-07-14 14:10:16

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-03	Oliver Kruse	B51474F2E664A976	2	0	1	3
Verified (Factored)	2017-11-05	kkmrkkblmbrbk	B51474F2E664A976	2	1436699	1	3
Verified	2020-07-15	Kirill Frolov	A009A671F98DC364	3	538391	5	3
Verified	2020-07-16	Klaus Nordmann	A009A671F98DC364	3	1026918	5	3

P-1 factors

Date	Factor	B1	B2
2015-07-13	2347183854347372281	500000	15000000

History

Date	User	Type	Result
2020-07-16	Klaus Nordmann	C-PRP	M1808497/39979002327738137/2347183854347372281/9706123523375446467647 : A009A671F98DC364 PRP: Verified PRP without proof (not generated)
2020-07-15	Kirill Frolov	C-PRP	M1808497/39979002327738137/2347183854347372281/9706123523375446467647 : A009A671F98DC364 PRP: Verified PRP without proof (not generated)
2020-07-14	_p95holder_	F-ECM	Factor: 9706123523375446467647 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-05	kkmrkkblmbrbk	C-PRP	M1808497/39979002327738137/2347183854347372281 : B51474F2E664A976 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1808497/39979002327738137/2347183854347372281 : B51474F2E664A976 PRP: Verified PRP without proof (not generated)
2015-07-13	alpertron	F-PM1	Factor: 2347183854347372281 / (P-1, B1=500000, B2=15000000, E=12)