What is the Greatest Common Factor of 42777 and 42789?

Greatest common factor (GCF) of 42777 and 42789 is 3.

GCF(42777,42789) = 3

We will now calculate the prime factors of 42777 and 42789, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42777 and 42789.

How to find the GCF of 42777 and 42789?

We will first find the prime factorization of 42777 and 42789. After we will calculate the factors of 42777 and 42789 and find the biggest common factor number .

Step-1: Prime Factorization of 42777

Prime factors of 42777 are 3, 7, 97. Prime factorization of 42777 in exponential form is:

42777 = 3² × 7² × 97¹

Step-2: Prime Factorization of 42789

Prime factors of 42789 are 3, 17, 839. Prime factorization of 42789 in exponential form is:

42789 = 3¹ × 17¹ × 839¹

Step-3: Factors of 42777

List of positive integer factors of 42777 that divides 42777 without a remainder.

1, 3, 7, 9, 21, 49, 63, 97, 147, 291, 441, 679, 873, 2037, 4753, 6111, 14259

Step-4: Factors of 42789

List of positive integer factors of 42789 that divides 42777 without a remainder.

1, 3, 17, 51, 839, 2517, 14263

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42777 and 42789. The biggest common factor number is the GCF number.
So the greatest common factor 42777 and 42789 is 3.

Also check out the Least Common Multiple of 42777 and 42789