What is the Greatest Common Factor of 42238 and 42245?

Greatest common factor (GCF) of 42238 and 42245 is 7.

GCF(42238,42245) = 7

We will now calculate the prime factors of 42238 and 42245, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42238 and 42245.

How to find the GCF of 42238 and 42245?

We will first find the prime factorization of 42238 and 42245. After we will calculate the factors of 42238 and 42245 and find the biggest common factor number .

Step-1: Prime Factorization of 42238

Prime factors of 42238 are 2, 7, 431. Prime factorization of 42238 in exponential form is:

42238 = 2¹ × 7² × 431¹

Step-2: Prime Factorization of 42245

Prime factors of 42245 are 5, 7, 17, 71. Prime factorization of 42245 in exponential form is:

42245 = 5¹ × 7¹ × 17¹ × 71¹

Step-3: Factors of 42238

List of positive integer factors of 42238 that divides 42238 without a remainder.

1, 2, 7, 14, 49, 98, 431, 862, 3017, 6034, 21119

Step-4: Factors of 42245

List of positive integer factors of 42245 that divides 42238 without a remainder.

1, 5, 7, 17, 35, 71, 85, 119, 355, 497, 595, 1207, 2485, 6035, 8449

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42238 and 42245. The biggest common factor number is the GCF number.
So the greatest common factor 42238 and 42245 is 7.

Also check out the Least Common Multiple of 42238 and 42245