What is the Greatest Common Factor of 42370 and 42390?

Greatest common factor (GCF) of 42370 and 42390 is 10.

GCF(42370,42390) = 10

We will now calculate the prime factors of 42370 and 42390, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42370 and 42390.

How to find the GCF of 42370 and 42390?

We will first find the prime factorization of 42370 and 42390. After we will calculate the factors of 42370 and 42390 and find the biggest common factor number .

Step-1: Prime Factorization of 42370

Prime factors of 42370 are 2, 5, 19, 223. Prime factorization of 42370 in exponential form is:

42370 = 2¹ × 5¹ × 19¹ × 223¹

Step-2: Prime Factorization of 42390

Prime factors of 42390 are 2, 3, 5, 157. Prime factorization of 42390 in exponential form is:

42390 = 2¹ × 3³ × 5¹ × 157¹

Step-3: Factors of 42370

List of positive integer factors of 42370 that divides 42370 without a remainder.

1, 2, 5, 10, 19, 38, 95, 190, 223, 446, 1115, 2230, 4237, 8474, 21185

Step-4: Factors of 42390

List of positive integer factors of 42390 that divides 42370 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 157, 270, 314, 471, 785, 942, 1413, 1570, 2355, 2826, 4239, 4710, 7065, 8478, 14130, 21195

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42370 and 42390. The biggest common factor number is the GCF number.
So the greatest common factor 42370 and 42390 is 10.

Also check out the Least Common Multiple of 42370 and 42390