1 845 913 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
11075479	8	23.4	old
12922158309115841	17	53.5	2014-09-28 11:08:06
7208308659936529513	19	62.6	2015-08-27 11:28:38
274125696466187185511	21	67.9	2020-06-06 23:25:05

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)	2017-10-05	Oliver Kruse	0B44E446F609CDB3	3	0	1	3
Verified (Factored)	2017-11-11	kkmrkkblmbrbk	0B44E446F609CDB3	3	568141	1	3
Verified	2020-06-07	M Miller	193BA39DD204EFB7	4	1331989	5	3
Verified	2020-06-07	atrench	193BA39DD204EFB7	4	838432	5	3
Verified	2020-06-08	Luigi Morelli	193BA39DD204EFB7	4	1715375	5	3

P-1 factors

Date	Factor	B1	B2
2015-08-27	7208308659936529513	500000	15000000

History

Date	User	Type	Result
2020-06-08	Luigi Morelli	C-PRP	M1845913/11075479/12922158309115841/7208308659936529513/274125696466187185511 : 193BA39DD204EFB7 PRP: Verified PRP without proof (not generated)
2020-06-07	atrench	C-PRP	M1845913/11075479/12922158309115841/7208308659936529513/274125696466187185511 : 193BA39DD204EFB7 PRP: Verified PRP without proof (not generated)
2020-06-07	M Miller	C-PRP	M1845913/11075479/12922158309115841/7208308659936529513/274125696466187185511 : 193BA39DD204EFB7 PRP: Verified PRP without proof (not generated)
2020-06-06	_p95holder_	F-ECM	Factor: 274125696466187185511 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-11	kkmrkkblmbrbk	C-PRP	M1845913/11075479/12922158309115841/7208308659936529513 : 0B44E446F609CDB3 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1845913/11075479/12922158309115841/7208308659936529513 : 0B44E446F609CDB3 PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1845913/11075479/12922158309115841/7208308659936529513 : 0B44E446F609CDB3 PRP without proof (not generated)
2015-08-27	alpertron	F-PM1	Factor: 7208308659936529513 / (P-1, B1=500000, B2=15000000, E=12)
2014-09-28	TJAOI	F	Factor: 12922158309115841 / TF: 53-54