12 509 779 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
104199979004479	15	46.6	old

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-04-13	Poao	53BEF1BEC9F107BB	1	6202941	5	3

History

Date	User	Type	Result
2022-04-13	David Barina	CERT	PRP Certification Proof certified good
2022-04-13	Poao	C-PRP	M12509779/104199979004479 : 53BEF1BEC9F107BB PRP proof power = 8 PRP: Verified Proof certified good
2022-04-07	Lisander Viaene	NF	no factor from 2^67 to 2^68
2022-04-07	Lisander Viaene	NF-PM1	B1=250000, B2=254029230

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