2269093

Appears in sequences

• Smith numbers which are also base-2 pseudoprimes.at n=9A063844
• Composite numbers k congruent to 5 (mod 8) such that 2^((k-1)/2) mod k = k-1.at n=20A244626
• Numbers k > 1 such that 2^k == 2 (mod k) and gcd(k, 3^k - 3) = 1.at n=25A300762
• Odd composite numbers k such that 2^((k-1)/2) == -1 (mod k).at n=30A356638