relatively prime

from The Free On-line Dictionary of Computing (8 July 2008)

relatively prime

   <mathematics> Having no common divisors (greater than 1).

   Two numbers are said to be relativey prime if there is no
   number greater than unity that divides both of them evenly.

   For example, 10 and 33 are relativly prime.  15 and 33 are not
   relatively prime, since 3 is a {divisor} of both.

   (1997-03-11)