What is the Greatest Common Factor of 10915 and 10920?

Greatest common factor (GCF) of 10915 and 10920 is 5.

GCF(10915,10920) = 5

We will now calculate the prime factors of 10915 and 10920, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 10915 and 10920.

How to find the GCF of 10915 and 10920?

We will first find the prime factorization of 10915 and 10920. After we will calculate the factors of 10915 and 10920 and find the biggest common factor number .

Step-1: Prime Factorization of 10915

Prime factors of 10915 are 5, 37, 59. Prime factorization of 10915 in exponential form is:

10915 = 5¹ × 37¹ × 59¹

Step-2: Prime Factorization of 10920

Prime factors of 10920 are 2, 3, 5, 7, 13. Prime factorization of 10920 in exponential form is:

10920 = 2³ × 3¹ × 5¹ × 7¹ × 13¹

Step-3: Factors of 10915

List of positive integer factors of 10915 that divides 10915 without a remainder.

1, 5, 37, 59, 185, 295, 2183

Step-4: Factors of 10920

List of positive integer factors of 10920 that divides 10915 without a remainder.

1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2184, 2730, 3640, 5460

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 10915 and 10920. The biggest common factor number is the GCF number.
So the greatest common factor 10915 and 10920 is 5.

Also check out the Least Common Multiple of 10915 and 10920