83423

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 4x + 9.at n=20A023312
• Half the number of n X n symmetric binary matrices with each 1 adjacent to some 0 horizontally (and vertically) and each 0 adjacent to some 1 horizontally (and vertically).at n=7A140417
• Primes p such that both prevprime(p^2) - 2 and nextprime(p^2) + 2 are also primes.at n=25A226986
• Prime numbersat n=8144