1 485 761 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
900371167	9	29.7	old
1415626288951664014872001	25	80.2	2023-12-12 13:36:24

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)	2017-10-01	Oliver Kruse	D71A2B108323F61E	1	0	1	3
Verified (Factored)	2017-10-28	kkmrkkblmbrbk	D71A2B108323F61E	1	980341	1	3
Verified	2023-12-12	Anton Tsvetkov	53FF1EED77721F5F	2	1229326	5	3

P-1 factors

Date	Factor	B1	B2
2023-12-12	1415626288951664014872001	5000000	1006114200

History

Date	User	Type	Result
2023-12-13	Semyon Musatov	CERT	PRP Certification Proof certified good
2023-12-12	Anton Tsvetkov	C-PRP	M1485761/900371167/1415626288951664014872001 : 53FF1EED77721F5F PRP proof power = 6 PRP: Verified Proof certified good
2023-12-12	Anton Tsvetkov	F-PM1	Factor: 1415626288951664014872001 / (P-1, B1=5000000, B2=1006114200)
2017-10-28	kkmrkkblmbrbk	C-PRP	M1485761/900371167 : D71A2B108323F61E PRP: Verified (Factored) PRP without proof (not generated)
2017-10-01	Oliver Kruse	C-PRP	M1485761/900371167 : D71A2B108323F61E PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12