I'm having a few problems with these questions. Determine all the twin primes p and q=p+2 for which pq-2 is also prime. For n>1, show that every prime divisor of n!+1 is an odd integer that is greater than n
Follow Math Help Forum on Facebook and Google+
Originally Posted by MichaelG I'm having a few problems with these questions. Determine all the twin primes p and q=p+2 for which pq-2 is also prime. For n>1, show that every prime divisor of n!+1 is an odd integer that is greater than n If p,q > 3 then one of them is -1 (mod 3) and the other one is 1 (mod 3) so their product is -1 (mod 3) and thus... The question about n!+1 is completely trivial if you dive a little deep into the definitions of these things. Tonio
View Tag Cloud