171937

Properties

Appears in sequences

• a(n) = a(n-1) + a(n-2) + 5 where a(0) = a(1) = 1.at n=22A111721
• Emirps using each of the digits 1, 3, 7, 9 at least once, but no others.at n=27A158917
• Prime numbersat n=15664