GCF(7,15,21)
Greatest Common Factor is :
1
Calculate Greatest Common Factor for :
7, 15 and 21
Factorize of the above numbers :
7 = 7
15 = 3 • 5
21 = 3 • 7
Build a prime factors table
Number of times each prime factor
appears in the factorization of :
Prime
Factor Number
7 Number
15 Number
21 G.C.F
(min)
3 0 1 1 0
5 0 1 0 0
7 1 0 1 0
GCF = 1
Greatest Common Factor is :
1
Hope this helps
