5 153 381 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
319509623	9	28.3	old

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	1C6CA29A15F7205E	1	0	1	3
Verified	2018-05-22	Luigi Morelli	1C6CA29A15F7205E	1	1426852	1	3

History

Date	User	Type	Result
2025-02-19	Sid & Andy	NF	no factor from 2^68 to 2^70
2025-01-17	Sid & Andy	NF-PM1	B1=3800000, B2=9313127670
2023-05-11	This -Anonymous-	NF-PM1	B1=50000, B2=1000000
2018-05-22	Luigi Morelli	C-PRP	M5153381/319509623 : 1C6CA29A15F7205E PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M5153381/319509623 : 1C6CA29A15F7205E PRP: Verified PRP without proof (not generated)