1416109

Properties

Appears in sequences

• Primes of form (prime(n)^2 + prime(n+1)^2)/2.at n=25A093343
• Numbers k such that Sum_{j=1..k} sigma(j) is a triangular number, where sigma(j) = sum of divisors of j (A000203).at n=11A226648
• Prime numbersat n=108228