What is the Greatest Common Factor of 8721 and 8736?

Greatest common factor (GCF) of 8721 and 8736 is 3.

GCF(8721,8736) = 3

We will now calculate the prime factors of 8721 and 8736, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 8721 and 8736.

How to find the GCF of 8721 and 8736?

We will first find the prime factorization of 8721 and 8736. After we will calculate the factors of 8721 and 8736 and find the biggest common factor number .

Step-1: Prime Factorization of 8721

Prime factors of 8721 are 3, 17, 19. Prime factorization of 8721 in exponential form is:

8721 = 3³ × 17¹ × 19¹

Step-2: Prime Factorization of 8736

Prime factors of 8736 are 2, 3, 7, 13. Prime factorization of 8736 in exponential form is:

8736 = 2⁵ × 3¹ × 7¹ × 13¹

Step-3: Factors of 8721

List of positive integer factors of 8721 that divides 8721 without a remainder.

1, 3, 9, 17, 19, 27, 51, 57, 153, 171, 323, 459, 513, 969, 2907

Step-4: Factors of 8736

List of positive integer factors of 8736 that divides 8721 without a remainder.

1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 28, 32, 39, 42, 48, 52, 56, 78, 84, 91, 96, 104, 112, 156, 168, 182, 208, 224, 273, 312, 336, 364, 416, 546, 624, 672, 728, 1092, 1248, 1456, 2184, 2912, 4368

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 8721 and 8736. The biggest common factor number is the GCF number.
So the greatest common factor 8721 and 8736 is 3.

Also check out the Least Common Multiple of 8721 and 8736