From the 9th Drive:

18525*2^520464-1 (156680 digits)

6207*2^512584-1 (154307 digits)

6283*2^513123-1 (154470 digits)

9th Drive:
23295*2^519113-1 (156273 digits)

From the 9th drive:

20145*2^521191-1 (156899 digits)
23805*2^521958-1 (157130 digits)

1029*2^698968-1 (210414 digits)

A k=21 prime very close to Peter's one at 1170k:

21*2^1182083-1 (355844 digits)
:smile:

k=21 is now completely tested up to n=1182400 and further tests are in progress.

1101*2^701727-1 (211244 digits)
1287*2^703172-1 (211679 digits)

1123*2^703855-1 (211885 digits)

my first prime!!!
 

[url=http://primes.utm.edu/primes/page.php?id=89508]211*2^842347-1[/url] is prime! (253575)


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Further discussion moved [URL="http://www.mersenneforum.org/showthread.php?t=12247"]here[/URL].

6019*2^477157-1 (143643 digits)

6083*2^477340-1 (143698 digits)