What is the Greatest Common Factor of 16915 and 16920?

Greatest common factor (GCF) of 16915 and 16920 is 5.

GCF(16915,16920) = 5

We will now calculate the prime factors of 16915 and 16920, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 16915 and 16920.

How to find the GCF of 16915 and 16920?

We will first find the prime factorization of 16915 and 16920. After we will calculate the factors of 16915 and 16920 and find the biggest common factor number .

Step-1: Prime Factorization of 16915

Prime factors of 16915 are 5, 17, 199. Prime factorization of 16915 in exponential form is:

16915 = 5¹ × 17¹ × 199¹

Step-2: Prime Factorization of 16920

Prime factors of 16920 are 2, 3, 5, 47. Prime factorization of 16920 in exponential form is:

16920 = 2³ × 3² × 5¹ × 47¹

Step-3: Factors of 16915

List of positive integer factors of 16915 that divides 16915 without a remainder.

1, 5, 17, 85, 199, 995, 3383

Step-4: Factors of 16920

List of positive integer factors of 16920 that divides 16915 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 47, 60, 72, 90, 94, 120, 141, 180, 188, 235, 282, 360, 376, 423, 470, 564, 705, 846, 940, 1128, 1410, 1692, 1880, 2115, 2820, 3384, 4230, 5640, 8460

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 16915 and 16920. The biggest common factor number is the GCF number.
So the greatest common factor 16915 and 16920 is 5.

Also check out the Least Common Multiple of 16915 and 16920