Answers

The gcf of 1 and 4 is 1.

Steps to find GCF

1. Find the prime factorization of 1
   1 = 1
2. Find the prime factorization of 4
   4 = 2 × 2
3. To find the gcf, multiply all the prime factors common to both numbers:
   
   Therefore, GCF = 1

The greatest common factor (gcf) is also known as greatest common divisor (gcd) or highest common factor (hcf).

Related

Find hcf of: 2 & 8 3 & 12 5 & 20 7 & 28 2 & 4 1 & 8 3 & 4 1 & 12 5 & 4 1 & 20 7 & 4 1 & 28

GCF Calculator

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