285517

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 56.at n=10A031644
• Primes of the form x^2 + 17*y^2, where x and y=x+1 are consecutive natural numbers.at n=25A176622
• Prime numbersat n=24880