互素

hùsù
  1. (math.) coprime
  2. relatively prime (having no common factor)

CEDICT

math

Entry Composition

1 互 hù mutual
2 素 sù
  1. raw silk
  2. white
  3. plain, unadorned
  4. vegetarian (food)
  5. essence
  6. nature
  7. element
  8. constituent
  9. usually
  10. always
  11. ever