What is the Greatest Common Factor of 42521 and 42540?

Greatest common factor (GCF) of 42521 and 42540 is 1.

GCF(42521,42540) = 1

We will now calculate the prime factors of 42521 and 42540, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42521 and 42540.

How to find the GCF of 42521 and 42540?

We will first find the prime factorization of 42521 and 42540. After we will calculate the factors of 42521 and 42540 and find the biggest common factor number .

Step-1: Prime Factorization of 42521

Prime factors of 42521 are 101, 421. Prime factorization of 42521 in exponential form is:

42521 = 101¹ × 421¹

Step-2: Prime Factorization of 42540

Prime factors of 42540 are 2, 3, 5, 709. Prime factorization of 42540 in exponential form is:

42540 = 2² × 3¹ × 5¹ × 709¹

Step-3: Factors of 42521

List of positive integer factors of 42521 that divides 42521 without a remainder.

1, 101, 421

Step-4: Factors of 42540

List of positive integer factors of 42540 that divides 42521 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 709, 1418, 2127, 2836, 3545, 4254, 7090, 8508, 10635, 14180, 21270

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42521 and 42540. The biggest common factor number is the GCF number.
So the greatest common factor 42521 and 42540 is 1.

Also check out the Least Common Multiple of 42521 and 42540