What is the Greatest Common Factor of 42420 and 42430?

Greatest common factor (GCF) of 42420 and 42430 is 10.

GCF(42420,42430) = 10

We will now calculate the prime factors of 42420 and 42430, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42420 and 42430.

How to find the GCF of 42420 and 42430?

We will first find the prime factorization of 42420 and 42430. After we will calculate the factors of 42420 and 42430 and find the biggest common factor number .

Step-1: Prime Factorization of 42420

Prime factors of 42420 are 2, 3, 5, 7, 101. Prime factorization of 42420 in exponential form is:

42420 = 2² × 3¹ × 5¹ × 7¹ × 101¹

Step-2: Prime Factorization of 42430

Prime factors of 42430 are 2, 5, 4243. Prime factorization of 42430 in exponential form is:

42430 = 2¹ × 5¹ × 4243¹

Step-3: Factors of 42420

List of positive integer factors of 42420 that divides 42420 without a remainder.

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 101, 105, 140, 202, 210, 303, 404, 420, 505, 606, 707, 1010, 1212, 1414, 1515, 2020, 2121, 2828, 3030, 3535, 4242, 6060, 7070, 8484, 10605, 14140, 21210

Step-4: Factors of 42430

List of positive integer factors of 42430 that divides 42420 without a remainder.

1, 2, 5, 10, 4243, 8486, 21215

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42420 and 42430. The biggest common factor number is the GCF number.
So the greatest common factor 42420 and 42430 is 10.

Also check out the Least Common Multiple of 42420 and 42430