What is the Greatest Common Factor of 78455 and 78460?

Greatest common factor (GCF) of 78455 and 78460 is 5.

GCF(78455,78460) = 5

We will now calculate the prime factors of 78455 and 78460, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78455 and 78460.

How to find the GCF of 78455 and 78460?

We will first find the prime factorization of 78455 and 78460. After we will calculate the factors of 78455 and 78460 and find the biggest common factor number .

Step-1: Prime Factorization of 78455

Prime factors of 78455 are 5, 13, 17, 71. Prime factorization of 78455 in exponential form is:

78455 = 5¹ × 13¹ × 17¹ × 71¹

Step-2: Prime Factorization of 78460

Prime factors of 78460 are 2, 5, 3923. Prime factorization of 78460 in exponential form is:

78460 = 2² × 5¹ × 3923¹

Step-3: Factors of 78455

List of positive integer factors of 78455 that divides 78455 without a remainder.

1, 5, 13, 17, 65, 71, 85, 221, 355, 923, 1105, 1207, 4615, 6035, 15691

Step-4: Factors of 78460

List of positive integer factors of 78460 that divides 78455 without a remainder.

1, 2, 4, 5, 10, 20, 3923, 7846, 15692, 19615, 39230

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78455 and 78460. The biggest common factor number is the GCF number.
So the greatest common factor 78455 and 78460 is 5.

Also check out the Least Common Multiple of 78455 and 78460