42443

Properties

Appears in sequences

• n written in fractional base 6/4.at n=45A024637
• a(n)=a(n-1)+a(m), where m=2n-2-2^(p+1) and 2^p<n-1<=2^(p+1), for n >= 4.at n=37A050063
• Primes p(k) such that the product of digits of p(k) equals the product of digits of k.at n=26A066521
• Safe primes (A005385) (p and (p-1)/2 are primes) such that 12*p+1 is also prime.at n=71A075707
• Primes p such that 2^p-1 and the p-th Fibonacci number have a common factor. Prime terms of A074776.at n=17A080050
• Evaluate n^4 - 93n^3 + 3196n^2 - 48008n + 265483 for n >= 0, record the primes.at n=8A095974
• Value of C in y = x^2+7x+C such that y is prime for all x = 0 to 4.at n=36A097436
• Primes having only {2, 3, 4} as digits.at n=30A199342
• Primes for which the sum of all preceding odd-indexed prime gaps is exactly one greater than the sum of all preceding even-indexed prime gaps.at n=29A282178
• Initial primes of 5 consecutive primes with consecutive gaps 8,6,4,2.at n=4A289907
• Union of 2, A282178, and A330339.at n=41A330554
• Discriminants of imaginary quadratic fields with class number 37 (negated).at n=37A351675
• Primes p such that p + 8, p + 14, p + 18 and p + 20 are also primes.at n=13A385035
• Prime numbersat n=4438