274568286337domain: NAppears in sequencesLeast prime factor of 2^n + 5^n.at n=64A122118Least prime factor of 2^(2^n) + 5^(2^n).at n=6A122119Sorted list of prime factors of numbers of the form 5^(2^m) + 2^(2^m) with m >= 0.at n=27A294133