What is the Greatest Common Factor of 42781 and 42800?

Greatest common factor (GCF) of 42781 and 42800 is 1.

GCF(42781,42800) = 1

We will now calculate the prime factors of 42781 and 42800, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42781 and 42800.

How to find the GCF of 42781 and 42800?

We will first find the prime factorization of 42781 and 42800. After we will calculate the factors of 42781 and 42800 and find the biggest common factor number .

Step-1: Prime Factorization of 42781

Prime factors of 42781 are 179, 239. Prime factorization of 42781 in exponential form is:

42781 = 179¹ × 239¹

Step-2: Prime Factorization of 42800

Prime factors of 42800 are 2, 5, 107. Prime factorization of 42800 in exponential form is:

42800 = 2⁴ × 5² × 107¹

Step-3: Factors of 42781

List of positive integer factors of 42781 that divides 42781 without a remainder.

1, 179, 239

Step-4: Factors of 42800

List of positive integer factors of 42800 that divides 42781 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 107, 200, 214, 400, 428, 535, 856, 1070, 1712, 2140, 2675, 4280, 5350, 8560, 10700, 21400

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42781 and 42800. The biggest common factor number is the GCF number.
So the greatest common factor 42781 and 42800 is 1.

Also check out the Least Common Multiple of 42781 and 42800