70793

Properties

Appears in sequences

• Indices of primes in sequence defined by A(0) = 23, A(n) = 10*A(n-1) - 17 for n > 0.at n=20A101953
• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 0100-0100-1111-0010 pattern in any orientation.at n=17A147031
• Primes p such that, for p < q < r three consecutive primes, p + 2q + 2r, 2p + q + 2r and 2p + 2q + r are all primes.at n=5A216262
• Primes whose base-8 representation also is the base-3 representation of a prime.at n=18A235471
• Primes that can be generated by the concatenation in base 8, in descending order, of two consecutive integers read in base 10.at n=23A287311
• Consider the graph of symmetric primes where p and q are connected if |p-q| = gcd(p-1,q-1). This sequence is an irregular table where the n-th row lists the first symmetric prime in a connected component with n vertices, with one representative for each nonisomorphic graph. Within a row, graphs are ordered by increasing size of its initial prime.at n=3A358312
• Prime numbersat n=7010