435599

Appears in sequences

• Numbers that are the product of a pair of twin primes.at n=29A037074
• Product of twin primes of form (4*k+3,4*(k+1)+1), k>=0.at n=14A071700
• Squarefree numbers k such that A076341(k) = 0.at n=37A076352
• Numbers that are one less than a square and have exactly 4 divisors.at n=30A134020
• Numbers k that form a primitive Pythagorean triple with k' and sqrt(k^2 + k'^2), where k' is the arithmetic derivative of k.at n=32A210503
• G-Lehmer numbers: Composite numbers k such that A060968(k) divides A201629(k).at n=20A235864
• Composite numbers k such that 2^k == 1 (mod cototient(k)).at n=20A291619
• Numbers k such that k^2 + sopfr(k)^2 is a square, where sopfr = A001414.at n=32A386991