What is the Greatest Common Factor of 78661 and 78678?

Greatest common factor (GCF) of 78661 and 78678 is 1.

GCF(78661,78678) = 1

We will now calculate the prime factors of 78661 and 78678, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78661 and 78678.

How to find the GCF of 78661 and 78678?

We will first find the prime factorization of 78661 and 78678. After we will calculate the factors of 78661 and 78678 and find the biggest common factor number .

Step-1: Prime Factorization of 78661

Prime factors of 78661 are 11, 7151. Prime factorization of 78661 in exponential form is:

78661 = 11¹ × 7151¹

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 78661

List of positive integer factors of 78661 that divides 78661 without a remainder.

1, 11, 7151

Step-4: Factors of 78678

List of positive integer factors of 78678 that divides 78661 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 78661 and 78678. The biggest common factor number is the GCF number.
So the greatest common factor 78661 and 78678 is 1.

Also check out the Least Common Multiple of 78661 and 78678