What is the Greatest Common Factor of 67965 and 67980?

Greatest common factor (GCF) of 67965 and 67980 is 15.

GCF(67965,67980) = 15

We will now calculate the prime factors of 67965 and 67980, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 67965 and 67980.

How to find the GCF of 67965 and 67980?

We will first find the prime factorization of 67965 and 67980. After we will calculate the factors of 67965 and 67980 and find the biggest common factor number .

Step-1: Prime Factorization of 67965

Prime factors of 67965 are 3, 5, 23, 197. Prime factorization of 67965 in exponential form is:

67965 = 3¹ × 5¹ × 23¹ × 197¹

Step-2: Prime Factorization of 67980

Prime factors of 67980 are 2, 3, 5, 11, 103. Prime factorization of 67980 in exponential form is:

67980 = 2² × 3¹ × 5¹ × 11¹ × 103¹

Step-3: Factors of 67965

List of positive integer factors of 67965 that divides 67965 without a remainder.

1, 3, 5, 15, 23, 69, 115, 197, 345, 591, 985, 2955, 4531, 13593, 22655

Step-4: Factors of 67980

List of positive integer factors of 67980 that divides 67965 without a remainder.

1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 103, 110, 132, 165, 206, 220, 309, 330, 412, 515, 618, 660, 1030, 1133, 1236, 1545, 2060, 2266, 3090, 3399, 4532, 5665, 6180, 6798, 11330, 13596, 16995, 22660, 33990

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 67965 and 67980. The biggest common factor number is the GCF number.
So the greatest common factor 67965 and 67980 is 15.

Also check out the Least Common Multiple of 67965 and 67980