50023

Properties

Appears in sequences

• Numbers n such that n, 10*n+1, 10*n+3, 10*n+7 and 10*n+9 are all primes.at n=16A067267
• Smallest positive real Gaussian prime having a gap size of exactly A128106(n).at n=20A128109
• Numbers k such that k and k^2 use only the digits 0, 2, 3, 5 and 9.at n=51A136891
• Primes where the first digit equals the sum of all the other digits.at n=30A156307
• a(n) = 74*n^2 - 1.at n=25A158744
• Odd primes which can never divide 2^a+2^b+1.at n=36A179113
• The first prime of 8 consecutive primes a, b, c, d, e, f, g, h such that a + g = c + e and b + h = d + f.at n=36A292618
• a(n) = (2*n^3 - n^2 + 3*n - 2)/2.at n=36A363288
• Prime numbersat n=5135