Via PFGW: 17^9021+32 is 3-PRP! (26.156000 seconds)
Via PrimeForm:
17^9021+32 (digits:11100 checksum:_4A249C2C_)
17^9021+32 is probable prime! (a = 13) (digits:11100)
17^9021+32 is probable prime! (verification : a = 31) (digits:11100)

Remark:
17^n+32 is composite for all smaller n<9021.

To be completed...