31193

Properties

Appears in sequences

• Right-truncatable primes: every prefix is prime.at n=48A024770
• a(n+1) is the next smallest prime beginning with a(n), initial prime is 3.at n=4A048550
• a(n) is smallest prime > 10*a(n-1), a(1) = 3.at n=4A065533
• Number of ways to get ten-pin bowling score of 300-n.at n=49A079596
• Primes such that least significant digit swapped with all other digits yields primes.at n=38A090934
• a(n) = smallest n-digit prime formed by appending a digit to a(n-1); a(1) = 3.at n=4A100894
• Primes of the form p^3 + q^3 + r^3, where p, q and r are primes.at n=38A123597
• Primes p such that q-p = 26, where q is the next prime after p.at n=16A124594
• Home primes whose homeliness is greater than 4.at n=20A133963
• Home primes whose homeliness is greater than 5.at n=6A133965
• Home primes whose homeliness is 6.at n=2A133966
• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0110 pattern in any orientation.at n=11A146667
• Emirps of the form k^2 + k + 41.at n=29A155953
• a(n) = 169*n^2 - 140*n + 29.at n=13A156639
• Positive numbers y such that y^2 is of the form x^2+(x+223)^2 with integer x.at n=9A159809
• Prime factors in a divisibility sequence of the Lucas sequence v(P=3,Q=5) of the second kind.at n=15A164816
• Smallest emirp corresponding to the prime of A178581.at n=31A178582
• Smallest emirp corresponding to the prime of A178583.at n=10A178584
• 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=19A178613
• Primes of the form x^3 + 2*y^3, with nonnegative x and y.at n=41A219559