359> divisble by 9... 361 should do it
359 is not divisible by 9 (its also prime)
359/9 =39.888888888888888888888888888889
361 isn't prime (19^2 =361)
Also Id redefine the Op to anything that can be done on a non programmable calculator, as things like primes(N) are kind of cheating imo. 367 after 359 btw.