k=65
 

Hi,

after a period of absence on this project, I'm catching up k=65 from n=210k until....?

Best Regards,

Templus/Ingmar (L75)

One more prime for k=231:
231*2^465391-1 (140100 digits)

status for k=75
 

[B]k=75[/B] has been tested up to n=500000 now, where I'm stopping.

The range n=250000-500000 contains the following primes:

75 306789
75 424392
75 434323
:rolleyes:

-- Thomas11 (L8)

231 498961

231 has been completed up to n=500k and continuing...

251 359790

This is my first 100,000 digits

Joss L15

Congrats jocelynl. 231 has also been producing some big ones recently:

231 535713

k=65 update
 

k=65 has been sieved until 123.0 billion (and still sieving).
It has been tested until n=267k.
No primes found yet. I am continuing on this k.

269 264932 is prime!

I'm taking this one to 400k

Joss

Finally I hit a big one:

[b]21*2^999599-1[/b] is prime! 310911 digits
currently the 80th largest of all times :w00t: :banana:

After testing k=21 from 500k to 950k in increasing order I decided to try the top range from 1M to 995k in reversed order and the prime was right there on line 7 of the file!

Achieved limits of this and other k's (no other primes found):
k=7: 1.180 M
k=21: 950k
k=55: 430k
k=77: 700k
k=79: 520k stopped
k=89: 500k

Continuing k=55 and k=89 to 520k, k=21 to 1M, k=7 and k=77 until further notice :wink:

k=65 update
 

k=65 has been sieved until 155G and tested until n=305k, no new primes found so far! There are 33800 tests until n=1M left.

k=89 completed to n=520k and stopped/released. No new primes.

Now I'd like to reserve k=95 and k=165 from 210k.