What is the Greatest Common Factor of 78665 and 78678?

Greatest common factor (GCF) of 78665 and 78678 is 1.

GCF(78665,78678) = 1

We will now calculate the prime factors of 78665 and 78678, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78665 and 78678.

How to find the GCF of 78665 and 78678?

We will first find the prime factorization of 78665 and 78678. After we will calculate the factors of 78665 and 78678 and find the biggest common factor number .

Step-1: Prime Factorization of 78665

Prime factors of 78665 are 5, 15733. Prime factorization of 78665 in exponential form is:

78665 = 5¹ × 15733¹

Step-2: Prime Factorization of 78678

Prime factors of 78678 are 2, 3, 31, 47. Prime factorization of 78678 in exponential form is:

78678 = 2¹ × 3³ × 31¹ × 47¹

Step-3: Factors of 78665

List of positive integer factors of 78665 that divides 78665 without a remainder.

1, 5, 15733

Step-4: Factors of 78678

List of positive integer factors of 78678 that divides 78665 without a remainder.

1, 2, 3, 6, 9, 18, 27, 31, 47, 54, 62, 93, 94, 141, 186, 279, 282, 423, 558, 837, 846, 1269, 1457, 1674, 2538, 2914, 4371, 8742, 13113, 26226, 39339

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78665 and 78678. The biggest common factor number is the GCF number.
So the greatest common factor 78665 and 78678 is 1.

Also check out the Least Common Multiple of 78665 and 78678