GCF for 61 and 72

What is the Greatest Common Factor of 61 and 72?

Answer: GCF of 61 and 72 is 1

(One)

Finding GCF for 61 and 72 using all factors (divisors) listing

The first method to find GCF for numbers 61 and 72 is to list all factors for both numbers and pick the highest common one:

All factors of 61: 1, 61

All factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

So the Greatest Common Factor for 61 and 72 is 1

Finding GCF for 61 and 72 by Prime Factorization

Related Calculations

GCF Table

Number 1Number 2GCF
46722
47721
4872
49721
50722
51723
52724
53721
5472
55721
5672
57723
58722
59721
6072
61721
62722
6372
6472
6572
6672
67721
68724
69723
70722
71721
727272
73721
74722
75723

About "Greatest Common Factor" Calculator

This calculator will help you find the greatest common factor (GCF) of two numbers. For example, it can help you find out what is the Greatest Common Factor of 61 and 72? (The answer is: 1). Select the first number (e.g. '61') and the second number (e.g. '72'). After that hit the 'Calculate' button.
Greatest Common Factor (GCF) also known as the Greatest Common Divisor (GCD) or Highest Common Factor (HCF) - it is the largest positive integer that divides each of the integers with zero remainder

FAQ

What is the Greatest Common Factor of 61 and 72?

GCF of 61 and 72 is 1