What is the Greatest Common Factor of 74805 and 74820?

Greatest common factor (GCF) of 74805 and 74820 is 15.

GCF(74805,74820) = 15

We will now calculate the prime factors of 74805 and 74820, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 74805 and 74820.

How to find the GCF of 74805 and 74820?

We will first find the prime factorization of 74805 and 74820. After we will calculate the factors of 74805 and 74820 and find the biggest common factor number .

Step-1: Prime Factorization of 74805

Prime factors of 74805 are 3, 5, 4987. Prime factorization of 74805 in exponential form is:

74805 = 3¹ × 5¹ × 4987¹

Step-2: Prime Factorization of 74820

Prime factors of 74820 are 2, 3, 5, 29, 43. Prime factorization of 74820 in exponential form is:

74820 = 2² × 3¹ × 5¹ × 29¹ × 43¹

Step-3: Factors of 74805

List of positive integer factors of 74805 that divides 74805 without a remainder.

1, 3, 5, 15, 4987, 14961, 24935

Step-4: Factors of 74820

List of positive integer factors of 74820 that divides 74805 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 43, 58, 60, 86, 87, 116, 129, 145, 172, 174, 215, 258, 290, 348, 430, 435, 516, 580, 645, 860, 870, 1247, 1290, 1740, 2494, 2580, 3741, 4988, 6235, 7482, 12470, 14964, 18705, 24940, 37410

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 74805 and 74820. The biggest common factor number is the GCF number.
So the greatest common factor 74805 and 74820 is 15.

Also check out the Least Common Multiple of 74805 and 74820