679057

Appears in sequences

• Overpseudoprimes to base 3.at n=31A141350
• a(n) = 10*a(n-1) - 7*a(n-2), with a(0)=0, a(1)=1.at n=7A190989
• Semiprimes of the form (4*n + 1)*(6*n + 1) = 24*n^2 + 10*n + 1.at n=23A255584