COOKIE CONSENT: By continuing to browse my site you agree to its use of cookies. OK or Tell me more
Search a number
constructible polygon  and  oban n.

First numbers that belong to both sets:

3, 5, 6, 8, 10, 12, 15, 16, 17, 20, 30, 60, 68, 80, 85, 96, 320, 510, 512, 680, 768, 816, 960.