Quote:
Originally Posted by gribozavr
I've done sieving and LLR'ing 15k=187466565 with n from 1 to 100000 and 100000 to 150000 is in progress and I've found some primes. There are many small primes, e.g. n={7,8,11...} as well as some bigger ones, up to ~27000 digits long.
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IMO you can post your primes to "top5000" list only if your primes are at least 56000 digits long, unless they have some "special form". "Special form" is NOT k*b^n+c, but I may be wrong...
Length of k*b^n primes can be calculated as length=log10(b)*n+k.
But keep searching!