29884473

Appears in sequences

• Numbers k such that k^3 divides 8^(k^2) + 1.at n=25A128681
• Primitive elements of the sequence of integers n such that n divides 2^n + 1 (A006521).at n=8A136473
• Numbers k such that k^2 divides 8^k + 1.at n=11A292333
• Numbers k such that 2^(2^k+1) == -1 (mod k^2).at n=7A377026