22573

Properties

Appears in sequences

• Primes with every digit a prime and the sum of the digits a prime.at n=36A062088
• Primes for which the five closest primes are smaller.at n=12A075037
• Primes from merging of 5 successive digits in decimal expansion of exp(2).at n=2A105001
• Primes with at least one of each prime digit.at n=8A108419
• a(n) = a(n-2)+a(n-3)+a(n-4)+a(n-5)+a(n-6)+a(n-7)+a(n-8).at n=26A109539
• prime(k) for those k where floor((2*(prime(k+1)-prime(k))*PrimePi(k) mod (8*k))/k) = m with m = 11.at n=9A109565
• Primes with a prime number of digits, all of them prime, that add up to a prime.at n=11A110028
• Let p be an element of A110028. Let L(p) be the sorted list of digits of p and let LL be the set of all L(p) with duplicates removed and ordered lexicographically. Then a(n) is the first element of A110028 such that L(a(n))=LL(n).at n=8A117608
• Primes of the form i*prime(i) + (i+1)*prime(i+1).at n=20A119487
• Numbers appearing in A122072 at least four times.at n=12A122390
• Primes with prime number of only prime digits (i.e., 2, 3, 5, 7).at n=21A124888
• Primes p such that q-p = 40, where q is the next prime after p.at n=2A126721
• Linking prime for the first and second member of maximal chains of primes that have at least three members.at n=6A145650
• Primes with a prime number of digits and using all of the prime digits 2, 3, 5, 7 at least once and no other digits.at n=0A153770
• Primes expressed as the sum of square of digits of all primes.at n=29A181508
• First primes beginning a chain of 4 primes indexed equidistantly (n-th, (n+b)-th, (n+2b)-th, (n+3b)-th primes) whose sum of squares is the square of two times a prime and with b <= n.at n=18A214265
• Number of n-digit 9th powers.at n=44A216659
• Numbers n such that the digit sum of Fibonacci(n) is equal to the digit sum of Lucas(n).at n=41A244923
• Number of (non-null) connected induced subgraphs in the n-triangular honeycomb bishop graph.at n=4A290783
• Number of subsets of {1...n} with no binary containments.at n=33A325107