21 520 699 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: 1 known prime factor

Factored

Factor	Digits	Bits	Date
9951272515156249334177	22	73.1	2009-07-21 01:40:00

Status	Date	User	Residue	Shift
Verified (Factored)	2005-01-10	Andy Ferguson	D1EB6D4169E9B8E8	12670279

History

Date	User	Type	Result
2009-07-21	Rob_Dee	F-PM1	Factor: 9951272515156249334177
2009-07-20	Rob_Dee	NF-PM1	B1=250000

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