Not a useful hint, sorry. “About half” of primes are in that sequence. The product of (1-2/p) behaves like exp of the sum of −2/p, which looks like a constant times log log N. So your product diverges to 0.
Yes, well … that would be too good anyway. A finite (greater than zero) percentage of primes in N*N+1.
Not a useful hint, sorry. “About half” of primes are in that sequence. The product of (1-2/p) behaves like exp of the sum of −2/p, which looks like a constant times log log N. So your product diverges to 0.
Yes, well … that would be too good anyway. A finite (greater than zero) percentage of primes in N*N+1.