chickadee » math » pairwise-coprime?

pairwise-coprime? a b ...procedure
a
integer
b
integer

Returns #t if the integers a b ... are pairwise coprime, meaning that each pair of integers is coprime.

The numbers 2, 6 and 15 are coprime, but not pairwise coprime, because 6 and 15 share the factor 3:

> (pairwise-coprime? 2 6 15)
#f

Wikipedia:Pairwise Coprime