Solutions by everydaycalculation.com

The GCF of 42 and 43 is 1.

- Find the prime factorization of 42

42 = 2 × 3 × 7 - Find the prime factorization of 43

43 = 43 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 1

MathStep (Works offline)

Download our mobile app and learn how to find GCF of upto four numbers in your own time:

Android and iPhone/ iPad

Find hcf of: 84 & 86 126 & 129 210 & 215 294 & 301 84 & 43 42 & 86 126 & 43 42 & 129 210 & 43 42 & 215 294 & 43 42 & 301

Enter two numbers separate by comma. To find GCF of more than two numbers, click here.

The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).

© everydaycalculation.com