What is the Greatest Common Factor of 60 and 70?
Greatest common factor (GCF) of 60 and 70 is 10.
GCF(60,70) = 10
We will now calculate the prime factors of 60 and 70, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 60 and 70.
How to find the GCF of 60 and 70?
We will first find the prime factorization of 60 and 70. After we will calculate the factors of 60 and 70 and find the biggest common factor number .
Step-1: Prime Factorization of 60
Prime factors of 60 are 2, 3, 5. Prime factorization of 60 in exponential form is:
60 = 22 × 31 × 51
Step-2: Prime Factorization of 70
Prime factors of 70 are 2, 5, 7. Prime factorization of 70 in exponential form is:
70 = 21 × 51 × 71
Step-3: Factors of 60
List of positive integer factors of 60 that divides 60 without a remainder.
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30
Step-4: Factors of 70
List of positive integer factors of 70 that divides 60 without a remainder.
1, 2, 5, 7, 10, 14, 35
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 60 and 70. The biggest common factor number is the GCF number.
So the greatest common factor 60 and 70 is 10.
Also check out the Least Common Multiple of 60 and 70