87977

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 31.at n=11A031619
• Primes which can be represented as the sum of a square and its reverse.at n=13A072383
• Primes with digit sum = 38.at n=32A106772
• a(n) = (n^5 - 133*n^4 + 6729*n^3 - 158379*n^2 + 1720294*n - 6823316)/4.at n=28A121887
• Maximum fixed points under iteration of sum of cubes of digits in base n.at n=41A226026
• Primes of the form abs((1/4)*(n^5 - 133n^4 + 6729n^3 - 158379n^2 + 1720294n - 6823316)) in order of increasing nonnegative n.at n=28A272710
• Prime numbersat n=8542