What is the Greatest Common Factor of 70845 and 70857?

Greatest common factor (GCF) of 70845 and 70857 is 3.

GCF(70845,70857) = 3

We will now calculate the prime factors of 70845 and 70857, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 70845 and 70857.

How to find the GCF of 70845 and 70857?

We will first find the prime factorization of 70845 and 70857. After we will calculate the factors of 70845 and 70857 and find the biggest common factor number .

Step-1: Prime Factorization of 70845

Prime factors of 70845 are 3, 5, 4723. Prime factorization of 70845 in exponential form is:

70845 = 3¹ × 5¹ × 4723¹

Step-2: Prime Factorization of 70857

Prime factors of 70857 are 3, 7873. Prime factorization of 70857 in exponential form is:

70857 = 3² × 7873¹

Step-3: Factors of 70845

List of positive integer factors of 70845 that divides 70845 without a remainder.

1, 3, 5, 15, 4723, 14169, 23615

Step-4: Factors of 70857

List of positive integer factors of 70857 that divides 70845 without a remainder.

1, 3, 9, 7873, 23619

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 70845 and 70857. The biggest common factor number is the GCF number.
So the greatest common factor 70845 and 70857 is 3.

Also check out the Least Common Multiple of 70845 and 70857