What is the Greatest Common Factor of 42390 and 42397?

Greatest common factor (GCF) of 42390 and 42397 is 1.

GCF(42390,42397) = 1

We will now calculate the prime factors of 42390 and 42397, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42390 and 42397.

How to find the GCF of 42390 and 42397?

We will first find the prime factorization of 42390 and 42397. After we will calculate the factors of 42390 and 42397 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 42397

Prime factors of 42397 are 42397. Prime factorization of 42397 in exponential form is:

42397 = 42397¹

Step-3: Factors of 42390

List of positive integer factors of 42390 that divides 42390 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

Step-4: Factors of 42397

List of positive integer factors of 42397 that divides 42390 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42390 and 42397. The biggest common factor number is the GCF number.
So the greatest common factor 42390 and 42397 is 1.

Also check out the Least Common Multiple of 42390 and 42397