164837

Properties

Appears in sequences

• Primes p such that (p-1) and the period length of 1/p are both squares.at n=33A076516
• Primes p such that all prime factors of p-1 have exponent 2.at n=20A089195
• Lower twin primes p1 such that p1-1 is a square.at n=15A145824
• Central coefficients of number triangle A113582.at n=28A154323
• Primes of the form 1+A162143(k).at n=5A164517
• Prime numbers of the form (n*(n+1)/2)^2 + 1.at n=8A262182
• a(n) = Sum_{k=1..n} (k/gcd(n, k))^3.at n=28A343513
• Prime numbersat n=15085