101531

Properties

Appears in sequences

• Primes in A059504.at n=19A109775
• The smaller member prime(i) of an emirp pair (prime(i),prime(j)), such that the digit sum of i equals the digit sum of j.at n=34A178613
• Number of (n+2)X(1+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.at n=10A251812
• Lesser of twin primes for which phi(p-1) < phi(p+1).at n=23A286715
• Prime numbersat n=9724