1 481 743 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
379326209	9	28.5	old
6500148717719	13	42.6	2008-07-15 10:01:37
5304385249122703	16	52.2	2014-08-01 12:36:21
1048389396681239730707795833	28	89.8	2023-10-29 12:51:25

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	4DCD770C250F9114	3	0	1	3
Verified (Factored)	2017-10-28	kkmrkkblmbrbk	4DCD770C250F9114	3	1285279	1	3
Verified	2023-10-29	Anton Tsvetkov	4D88C9C551EBC999	4	553759	5	3

P-1 factors

Date	Factor	B1	B2
2023-10-29	1048389396681239730707795833	5000000	1006114200

History

Date	User	Type	Result
2023-10-29	curtisc	CERT	PRP Certification Proof certified good
2023-10-29	Anton Tsvetkov	C-PRP	M1481743/379326209/6500148717719/5304385249122703/1048389396681239730707795833 : 4D88C9C551EBC999 PRP proof power = 6 PRP: Verified Proof certified good
2023-10-29	Anton Tsvetkov	F-PM1	Factor: 1048389396681239730707795833 / (P-1, B1=5000000, B2=1006114200)
2017-10-28	kkmrkkblmbrbk	C-PRP	M1481743/379326209/6500148717719/5304385249122703 : 4DCD770C250F9114 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1481743/379326209/6500148717719/5304385249122703 : 4DCD770C250F9114 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-01	Oliver Kruse	C-PRP	M1481743/379326209/6500148717719/5304385249122703 : 4DCD770C250F9114 PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-08-01	TJAOI	F	Factor: 5304385249122703
2008-07-15	J Feitsma	F	Factor: 6500148717719