16 571 221 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
99427327	8	26.6	old

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2024-04-29	ATH	8CC3DB62DC14E504	1	13155664	5	3

History

Date	User	Type	Result
2024-04-29	Ben Delo	CERT	PRP Certification Proof certified good
2024-04-29	ATH	C-PRP	M16571221/99427327 : 8CC3DB62DC14E504 PRP proof power = 8 PRP: Verified Proof certified good
2024-03-07	nordi	NF-PM1	B1=500000, B2=266674590
2024-01-17	nordi	NF-PM1	B1=500000

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