What is the Greatest Common Factor of 42770 and 42781?

Greatest common factor (GCF) of 42770 and 42781 is 1.

GCF(42770,42781) = 1

We will now calculate the prime factors of 42770 and 42781, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42770 and 42781.

How to find the GCF of 42770 and 42781?

We will first find the prime factorization of 42770 and 42781. After we will calculate the factors of 42770 and 42781 and find the biggest common factor number .

Step-1: Prime Factorization of 42770

Prime factors of 42770 are 2, 5, 7, 13, 47. Prime factorization of 42770 in exponential form is:

42770 = 2¹ × 5¹ × 7¹ × 13¹ × 47¹

Step-2: Prime Factorization of 42781

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

42781 = 179¹ × 239¹

Step-3: Factors of 42770

List of positive integer factors of 42770 that divides 42770 without a remainder.

1, 2, 5, 7, 10, 13, 14, 26, 35, 47, 65, 70, 91, 94, 130, 182, 235, 329, 455, 470, 611, 658, 910, 1222, 1645, 3055, 3290, 4277, 6110, 8554, 21385

Step-4: Factors of 42781

List of positive integer factors of 42781 that divides 42770 without a remainder.

1, 179, 239

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42770 and 42781. The biggest common factor number is the GCF number.
So the greatest common factor 42770 and 42781 is 1.

Also check out the Least Common Multiple of 42770 and 42781