28 Apr
2019
28 Apr
'19
10:10 p.m.
On Sun, Apr 28, 2019 at 9:28 PM Dan Asimov <dasimov@earthlink.net> wrote:
II. What kinds of nice functions f : Z+ —> Z+ are known to have infinitely many primes in their image:
|f(Z+) ∩ Primes| = oo
???
f(z) = z and f(z) = 2z+1 come to mind... -- Mike Stay - metaweta@gmail.com http://math.ucr.edu/~mike https://reperiendi.wordpress.com