275000

Appears in sequences

• Numbers n for which n=(n'' mod n'), where n' and n'' are the first and second arithmetic derivative of n.at n=27A213241
• Numbers with prime factorization Product_{k=1..w} prime(i_k) ^ e_k (where w = A001221(n) and prime(i) denotes the i-th prime number) such that i_k <> e_k for k = 1..w and { i_1, ..., i_w } = { e_1, ..., e_w }.at n=35A320252
• a(1) = 2, a(2) = 3; thereafter, a(n) = a(n-1) + sum of prior prime terms.at n=28A381149