Least prime factor of 2^(2^n) + 5^(2^n).
A122119
Least prime factor of 2^(2^n) + 5^(2^n).
Terms
- a(0) =7a(1) =29a(2) =641a(3) =17a(4) =97a(5) =193a(6) =274568286337a(7) =257a(8) =211457a(9) =12289
External references
- oeis: A122119
A122119
Least prime factor of 2^(2^n) + 5^(2^n).