GCF for 30 and 31

What is the Greatest Common Factor of 30 and 31?

Answer: GCF of 30 and 31 is 1

(One)

Finding GCF for 30 and 31 using all factors (divisors) listing

The first method to find GCF for numbers 30 and 31 is to list all factors for both numbers and pick the highest common one:

All factors of 30: 1, 2, 3, 5, 6, 10, 15, 30

All factors of 31: 1, 31

So the Greatest Common Factor for 30 and 31 is 1

Finding GCF for 30 and 31 by Prime Factorization

Related Calculations

GCF Table

Number 1Number 2GCF
15311
16311
17311
18311
19311
20311
21311
22311
23311
24311
25311
26311
27311
28311
29311
30311
313131
32311
33311
34311
35311
36311
37311
38311
39311
40311
41311
42311
43311
44311

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 30 and 31? (The answer is: 1). Select the first number (e.g. '30') and the second number (e.g. '31'). 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 30 and 31?

GCF of 30 and 31 is 1