Another biggie
 

I found a biggie!

15 656264

Regards

Robert Smith

Congrats on a big one with the 'original' 15k!

...

Reporting 692835 314790

8331405 585714

435435 249329

692835*2^407763-1

Well, after a month of nothing, I get two a couple of hours apart:

692835*2^408194-1

692835*2^408895-1

Larry, amazing :shock: three primes next to each other, with such large exponents! And just on time as we try to defend our top positon "by number" in Top-5000, currently:
15k ... 348
PIES ... 336

165 487961

I'm submitting k=165 primes using my "15k" prover's code.
But [URL=http://primes.utm.edu/bios/top20.php?type=project&by=PrimesRank&at=1&id=488]our lead[/URL] "by number" is now only 9, 349:340. So, if you have any "15k" pre-sieved values fire your LLR machines NOW!

3611911875 302435

24715*2^216171-1
May be a general Mersenne.