What is the Greatest Common Factor of 42813 and 42831?

Greatest common factor (GCF) of 42813 and 42831 is 9.

GCF(42813,42831) = 9

We will now calculate the prime factors of 42813 and 42831, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42813 and 42831.

How to find the GCF of 42813 and 42831?

We will first find the prime factorization of 42813 and 42831. After we will calculate the factors of 42813 and 42831 and find the biggest common factor number .

Step-1: Prime Factorization of 42813

Prime factors of 42813 are 3, 67, 71. Prime factorization of 42813 in exponential form is:

42813 = 3² × 67¹ × 71¹

Step-2: Prime Factorization of 42831

Prime factors of 42831 are 3, 4759. Prime factorization of 42831 in exponential form is:

42831 = 3² × 4759¹

Step-3: Factors of 42813

List of positive integer factors of 42813 that divides 42813 without a remainder.

1, 3, 9, 67, 71, 201, 213, 603, 639, 4757, 14271

Step-4: Factors of 42831

List of positive integer factors of 42831 that divides 42813 without a remainder.

1, 3, 9, 4759, 14277

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42813 and 42831. The biggest common factor number is the GCF number.
So the greatest common factor 42813 and 42831 is 9.

Also check out the Least Common Multiple of 42813 and 42831