344373773

Properties

Appears in sequences

• Smallest k such that 2^^n is not congruent to 2^^(n-1) mod k, where 2^^n denotes the power tower 2^2^...^2 (in which 2 appears n times).at n=18A027763
• Position of first appearance of n in A256757.at n=19A256758
• Prime numbersat n=18517559