What is the Greatest Common Factor of 315 and 693?
Greatest common factor (GCF) of 315 and 693 is 63.
GCF(315,693) = 63
We will now calculate the prime factors of 315 and 693, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 315 and 693.
How to find the GCF of 315 and 693?
We will first find the prime factorization of 315 and 693. After we will calculate the factors of 315 and 693 and find the biggest common factor number .
Step-1: Prime Factorization of 315
Prime factors of 315 are 3, 5, 7. Prime factorization of 315 in exponential form is:
315 = 32 × 51 × 71
Step-2: Prime Factorization of 693
Prime factors of 693 are 3, 7, 11. Prime factorization of 693 in exponential form is:
693 = 32 × 71 × 111
Step-3: Factors of 315
List of positive integer factors of 315 that divides 315 without a remainder.
1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105
Step-4: Factors of 693
List of positive integer factors of 693 that divides 315 without a remainder.
1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 315 and 693. The biggest common factor number is the GCF number.
So the greatest common factor 315 and 693 is 63.
Also check out the Least Common Multiple of 315 and 693
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