131671

Properties

Appears in sequences

• a(n) = smallest prime number p_k such that 1/p_n + 1/p_{n+1} + ... + 1/p_k > 1.at n=19A119494
• a(n) = 3*n^4 + 6*n^3 - 3*n + 1.at n=14A181475
• Centered 15-gonal (or pentadecagonal) primes.at n=27A264822
• Prime numbersat n=12298