What is the Greatest Common Factor of 70812 and 70821?

Greatest common factor (GCF) of 70812 and 70821 is 9.

GCF(70812,70821) = 9

We will now calculate the prime factors of 70812 and 70821, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 70812 and 70821.

How to find the GCF of 70812 and 70821?

We will first find the prime factorization of 70812 and 70821. After we will calculate the factors of 70812 and 70821 and find the biggest common factor number .

Step-1: Prime Factorization of 70812

Prime factors of 70812 are 2, 3, 7, 281. Prime factorization of 70812 in exponential form is:

70812 = 2² × 3² × 7¹ × 281¹

Step-2: Prime Factorization of 70821

Prime factors of 70821 are 3, 43, 61. Prime factorization of 70821 in exponential form is:

70821 = 3³ × 43¹ × 61¹

Step-3: Factors of 70812

List of positive integer factors of 70812 that divides 70812 without a remainder.

1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 281, 562, 843, 1124, 1686, 1967, 2529, 3372, 3934, 5058, 5901, 7868, 10116, 11802, 17703, 23604, 35406

Step-4: Factors of 70821

List of positive integer factors of 70821 that divides 70812 without a remainder.

1, 3, 9, 27, 43, 61, 129, 183, 387, 549, 1161, 1647, 2623, 7869, 23607

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 70812 and 70821. The biggest common factor number is the GCF number.
So the greatest common factor 70812 and 70821 is 9.

Also check out the Least Common Multiple of 70812 and 70821