42457

Properties

Appears in sequences

• Fibonacci numbers written in base 8.at n=22A004691
• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 14.at n=30A031602
• Primes p such that the differences between the 5 consecutive primes starting with p are (4,2,4,6).at n=14A078952
• Integers k such that 10^k+19 is a prime number.at n=18A108052
• Primes that remain prime when a single digit 7 is inserted between any two consecutive digits or as the leading or trailing digit.at n=19A215420
• Primes p such that the polynomial k^4 + k^3 + k^2 + k + p yields only primes for k = 0...5.at n=22A247949
• Primes p(n) such that p(n) + p(n+3) = p(n+1) + p(n+2) and p(n) + p(n+4) = p(n+2) + p(n+3).at n=32A266882
• a(n) = Fibonacci(n) represented in bijective base-8 numeration.at n=21A282239
• Prime numbersat n=4440