GCF for 100 and 215

What is the Greatest Common Factor of 100 and 215?

Answer: GCF of 100 and 215 is 5

(Five)

Finding GCF for 100 and 215 using all factors (divisors) listing

The first method to find GCF for numbers 100 and 215 is to list all factors for both numbers and pick the highest common one:

All factors of 100: 1, 2, 4, 5, 10, 20, 25, 50, 100

All factors of 215: 1, 5, 43, 215

So the Greatest Common Factor for 100 and 215 is 5

Finding GCF for 100 and 215 by Prime Factorization

The second method to find GCF for numbers 100 and 215 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 100: 2, 2, 5, 5

All Prime Factors of 215: 5, 43

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 100 and 215

GCF Table

Number 1Number 2GCF
852155
8621543
872151
882151
892151
902155
912151
922151
932151
942151
952155
962151
972151
982151
992151
1002155
1012151
1022151
1032151
1042151
1052155
1062151
1072151
1082151
1092151
1102155
1112151
1122151
1132151
1142151

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 100 and 215? (The answer is: 5). Select the first number (e.g. '100') and the second number (e.g. '215'). 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 100 and 215?

GCF of 100 and 215 is 5