May be this question is stupid, but in GFN "Primes by user" tables I see a column "Primes/PRP" and titles like "User xxxx has found N primes and K PRPs". What does PRP mean is this context? I know it usually stands for "probable prime". I'm curious because there is a one such entry in GFN32768 results:
but when I run it through latest LLR, it said that number is true prime:
stream@ubuntuserver:~/boincdata/projects/www.primegrid.com$ ./llr64 -d -q"6656034^32768+1"
Base factorized as : 2*3*7*11*14407
Base prime factor(s) taken : 14407
Starting N-1 prime test of 6656034^32768+1
Using generic reduction FMA3 FFT length 72K, Pass1=384, Pass2=192, a = 3
6656034^32768+1 may be prime, trying to compute gcd's
3^((N-1)/14407)-1 is coprime to N!
6656034^32768+1 is prime! (223584 decimal digits) Time : 1490.407 sec.
Am I missing something or it's just a wrong entry in the table?