What is the Greatest Common Factor of 78561 and 78572?

Greatest common factor (GCF) of 78561 and 78572 is 1.

GCF(78561,78572) = 1

We will now calculate the prime factors of 78561 and 78572, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78561 and 78572.

How to find the GCF of 78561 and 78572?

We will first find the prime factorization of 78561 and 78572. After we will calculate the factors of 78561 and 78572 and find the biggest common factor number .

Step-1: Prime Factorization of 78561

Prime factors of 78561 are 3, 7, 29, 43. Prime factorization of 78561 in exponential form is:

78561 = 3² × 7¹ × 29¹ × 43¹

Step-2: Prime Factorization of 78572

Prime factors of 78572 are 2, 13, 1511. Prime factorization of 78572 in exponential form is:

78572 = 2² × 13¹ × 1511¹

Step-3: Factors of 78561

List of positive integer factors of 78561 that divides 78561 without a remainder.

1, 3, 7, 9, 21, 29, 43, 63, 87, 129, 203, 261, 301, 387, 609, 903, 1247, 1827, 2709, 3741, 8729, 11223, 26187

Step-4: Factors of 78572

List of positive integer factors of 78572 that divides 78561 without a remainder.

1, 2, 4, 13, 26, 52, 1511, 3022, 6044, 19643, 39286

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78561 and 78572. The biggest common factor number is the GCF number.
So the greatest common factor 78561 and 78572 is 1.

Also check out the Least Common Multiple of 78561 and 78572