What is the Greatest Common Factor of 42143 and 42155?

Greatest common factor (GCF) of 42143 and 42155 is 1.

GCF(42143,42155) = 1

We will now calculate the prime factors of 42143 and 42155, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42143 and 42155.

How to find the GCF of 42143 and 42155?

We will first find the prime factorization of 42143 and 42155. After we will calculate the factors of 42143 and 42155 and find the biggest common factor number .

Step-1: Prime Factorization of 42143

Prime factors of 42143 are 17, 37, 67. Prime factorization of 42143 in exponential form is:

42143 = 17¹ × 37¹ × 67¹

Step-2: Prime Factorization of 42155

Prime factors of 42155 are 5, 8431. Prime factorization of 42155 in exponential form is:

42155 = 5¹ × 8431¹

Step-3: Factors of 42143

List of positive integer factors of 42143 that divides 42143 without a remainder.

1, 17, 37, 67, 629, 1139, 2479

Step-4: Factors of 42155

List of positive integer factors of 42155 that divides 42143 without a remainder.

1, 5, 8431

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42143 and 42155. The biggest common factor number is the GCF number.
So the greatest common factor 42143 and 42155 is 1.

Also check out the Least Common Multiple of 42143 and 42155