53231

Properties

Appears in sequences

• Numbers whose least quadratic nonresidue (A020649) is 23.at n=5A025028
• Primes with 23 as smallest positive primitive root.at n=19A061335
• Lesser of twin balanced primes (A090403).at n=24A096694
• Odd numbers k for which 23 is the smallest positive i with Jacobi symbol J(i,k) != 1.at n=6A112079
• Primes p such that (p reversed)-10 is a square.at n=33A167475
• Lesser of twin primes p1 such that p1*p2-4 and p1*p2-6 are twin prime numbers.at n=25A174957
• Least prime k such that x' = k has n solutions, where x' is the arithmetic derivative (A003415) of x.at n=37A189559
• Primes of the form 5n^3-9.at n=4A200913
• Primes arising in A069607.at n=3A236529
• a(n+1) is the smallest prime > a(n) such that the digits of a(n) are all (with multiplicity) contained in the digits of a(n+1), with a(1)=5.at n=13A242906
• Initial members of prime quadruples (n, n+2, n+36, n+38).at n=32A248367
• The lexicographically earliest sequence of primes, each two of which sum to a triprime (A014612).at n=6A335752
• a(n) = Sum_{k=0..n} floor(sqrt(k))^5.at n=36A363499
• Prime numbersat n=5430