21 533 999 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
463650891916366479529	21	68.7	2017-11-21 13:17:38

Status	Date	User	Residue	Shift
Verified (Factored)	2004-01-18	Kostas G. Gavrielidis	239C1287916CFDEC	1045834
Verified (Factored)	2009-04-14	TheJudger	239C1287916CFDEC	16724135

History

Date	User	Type	Result
2017-11-21	VictordeHollander	F	Factor: 463650891916366479529 / TF: 68-69
2017-04-15	ramgeis	NF	no factor from 2^67 to 2^68
2015-05-09	NR	NF	no factor from 2^66 to 2^67
2009-04-14	TheJudger	C-LL	239C1287916CFDEC