GCF for 90 and 845

What is the Greatest Common Factor of 90 and 845?

Answer: GCF of 90 and 845 is 5

(Five)

Finding GCF for 90 and 845 using all factors (divisors) listing

The first method to find GCF for numbers 90 and 845 is to list all factors for both numbers and pick the highest common one:

All factors of 90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

All factors of 845: 1, 5, 13, 65, 169, 845

So the Greatest Common Factor for 90 and 845 is 5

Finding GCF for 90 and 845 by Prime Factorization

The second method to find GCF for numbers 90 and 845 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 90: 2, 3, 3, 5

All Prime Factors of 845: 5, 13, 13

As we can see there is only one Prime Factor common to both numbers. It is 5

So 5 is the Greatest Common Factor of 90 and 845

GCF Table

Number 1Number 2GCF
758455
768451
778451
7884513
798451
808455
818451
828451
838451
848451
858455
868451
878451
888451
898451
908455
9184513
928451
938451
948451
958455
968451
978451
988451
998451
1008455
1018451
1028451
1038451
10484513

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 90 and 845? (The answer is: 5). Select the first number (e.g. '90') and the second number (e.g. '845'). 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 90 and 845?

GCF of 90 and 845 is 5