[URL="http://primes.utm.edu/primes/page.php?id=119952"]5903*2^2938744-1[/URL]

[QUOTE=unconnected;402993][URL="http://primes.utm.edu/primes/page.php?id=119952"]5903*2^2938744-1[/URL][/QUOTE]

Good job! :tu:

[URL="http://primes.utm.edu/primes/page.php?id=119995"]4233 * 28^331135 + 1[/URL]

Nice one Rajula!

S315
 

I may as well post my find for today. It gives us 3 nice ones in a about a day.

1390*315^101935+1 is prime but NOT Top5000

278*315^180134+1 is prime and IS Top 5000 [URL]http://primes.utm.edu/primes/page.php?id=119998[/URL]

All k's for S315 tested to 180K and continuing.

This makes S315 a 2ker

Gary: Sorry for not posting the smaller one. I was waiting until I reached n=200K but the big one showed up.

Nice ones Ian! The project is rolling today. :-)

Added [URL="http://primes.utm.edu/primes/page.php?id=120046"]120046[/URL] : 2751*2^3206569-1 (965277 digits)

This eliminates most high-weighted k=5502 from R256 search.

[URL="http://primes.utm.edu/primes/page.php?id=120095"]10243047*2^1290576+1[/URL] is prime.

[URL="http://primes.utm.edu/primes/page.php?id=120125"]6*409^369832+1[/URL] (965900 digits) found by Grey (credits goes to him)

base S409 solved

[URL="http://primes.utm.edu/primes/page.php?id=120125"][/URL]

[URL="http://primes.utm.edu/primes/page.php?id=120129"]5354*55^244064-1[/URL] (424764 digits) found by Grey (credits goes to him)

[URL="http://primes.utm.edu/primes/page.php?id=120151"]3394*28^427262 + 1[/URL]