What is the Greatest Common Factor of 66280 and 66285?

Greatest common factor (GCF) of 66280 and 66285 is 5.

GCF(66280,66285) = 5

We will now calculate the prime factors of 66280 and 66285, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66280 and 66285.

How to find the GCF of 66280 and 66285?

We will first find the prime factorization of 66280 and 66285. After we will calculate the factors of 66280 and 66285 and find the biggest common factor number .

Step-1: Prime Factorization of 66280

Prime factors of 66280 are 2, 5, 1657. Prime factorization of 66280 in exponential form is:

66280 = 2³ × 5¹ × 1657¹

Step-2: Prime Factorization of 66285

Prime factors of 66285 are 3, 5, 491. Prime factorization of 66285 in exponential form is:

66285 = 3³ × 5¹ × 491¹

Step-3: Factors of 66280

List of positive integer factors of 66280 that divides 66280 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 1657, 3314, 6628, 8285, 13256, 16570, 33140

Step-4: Factors of 66285

List of positive integer factors of 66285 that divides 66280 without a remainder.

1, 3, 5, 9, 15, 27, 45, 135, 491, 1473, 2455, 4419, 7365, 13257, 22095

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66280 and 66285. The biggest common factor number is the GCF number.
So the greatest common factor 66280 and 66285 is 5.

Also check out the Least Common Multiple of 66280 and 66285