What is the Greatest Common Factor of 42788 and 42805?

Greatest common factor (GCF) of 42788 and 42805 is 1.

GCF(42788,42805) = 1

We will now calculate the prime factors of 42788 and 42805, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42788 and 42805.

How to find the GCF of 42788 and 42805?

We will first find the prime factorization of 42788 and 42805. After we will calculate the factors of 42788 and 42805 and find the biggest common factor number .

Step-1: Prime Factorization of 42788

Prime factors of 42788 are 2, 19, 563. Prime factorization of 42788 in exponential form is:

42788 = 2² × 19¹ × 563¹

Step-2: Prime Factorization of 42805

Prime factors of 42805 are 5, 7, 1223. Prime factorization of 42805 in exponential form is:

42805 = 5¹ × 7¹ × 1223¹

Step-3: Factors of 42788

List of positive integer factors of 42788 that divides 42788 without a remainder.

1, 2, 4, 19, 38, 76, 563, 1126, 2252, 10697, 21394

Step-4: Factors of 42805

List of positive integer factors of 42805 that divides 42788 without a remainder.

1, 5, 7, 35, 1223, 6115, 8561

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42788 and 42805. The biggest common factor number is the GCF number.
So the greatest common factor 42788 and 42805 is 1.

Also check out the Least Common Multiple of 42788 and 42805