What is the Greatest Common Factor of 67805 and 67815?

Greatest common factor (GCF) of 67805 and 67815 is 5.

GCF(67805,67815) = 5

We will now calculate the prime factors of 67805 and 67815, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 67805 and 67815.

How to find the GCF of 67805 and 67815?

We will first find the prime factorization of 67805 and 67815. After we will calculate the factors of 67805 and 67815 and find the biggest common factor number .

Step-1: Prime Factorization of 67805

Prime factors of 67805 are 5, 71, 191. Prime factorization of 67805 in exponential form is:

67805 = 5¹ × 71¹ × 191¹

Step-2: Prime Factorization of 67815

Prime factors of 67815 are 3, 5, 11, 137. Prime factorization of 67815 in exponential form is:

67815 = 3² × 5¹ × 11¹ × 137¹

Step-3: Factors of 67805

List of positive integer factors of 67805 that divides 67805 without a remainder.

1, 5, 71, 191, 355, 955, 13561

Step-4: Factors of 67815

List of positive integer factors of 67815 that divides 67805 without a remainder.

1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 137, 165, 411, 495, 685, 1233, 1507, 2055, 4521, 6165, 7535, 13563, 22605

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 67805 and 67815. The biggest common factor number is the GCF number.
So the greatest common factor 67805 and 67815 is 5.

Also check out the Least Common Multiple of 67805 and 67815