What is the Greatest Common Factor of 747 and 756?
Greatest common factor (GCF) of 747 and 756 is 9.
GCF(747,756) = 9
We will now calculate the prime factors of 747 and 756, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 747 and 756.
How to find the GCF of 747 and 756?
We will first find the prime factorization of 747 and 756. After we will calculate the factors of 747 and 756 and find the biggest common factor number .
Step-1: Prime Factorization of 747
Prime factors of 747 are 3, 83. Prime factorization of 747 in exponential form is:
747 = 32 × 831
Step-2: Prime Factorization of 756
Prime factors of 756 are 2, 3, 7. Prime factorization of 756 in exponential form is:
756 = 22 × 33 × 71
Step-3: Factors of 747
List of positive integer factors of 747 that divides 747 without a remainder.
1, 3, 9, 83, 249
Step-4: Factors of 756
List of positive integer factors of 756 that divides 747 without a remainder.
1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 747 and 756. The biggest common factor number is the GCF number.
So the greatest common factor 747 and 756 is 9.
Also check out the Least Common Multiple of 747 and 756
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Related Greatest Common Factors of 756
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