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875*2^757362-1 is prime

441*2^749693-1 is prime

[FONT=Arial, Helvetica, sans serif]665*2^747202-1 is prime
[/FONT]

803*2^761362-1 is prime

521*2^759146-1 is prime

3 primes in 4 hours on 3 different drives/servers; 2 for n>749K!:

773*2^749914-1 is prime
597*2^760996-1 is prime

:-)

From the 6th drive 4 hours before switching the remainder of my machines to the rally:

747*2^750169-1 is prime

411*2^762935-1 is prime

Lennart found 489*2^780040-1 is confirmed prime.

583*2^781515-1 Is Prime

Reported

Lennart

[quote=gd_barnes;213697]Lennart found 489*2^780040-1 is confirmed prime.[/quote]
Hey Gary, I saw you put this in the k=1003-3000 thread by accident; I moved it here.