Greatest Common Factor of 217 and 218

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 217, 218 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 217 and 218 is 1.

GCF(217,218) = 1

GCF of 217 and 218

Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;

GCF of:
and

Greatest Common Factor of 217 and 218

GCF of 217 and 218 is 1

Prime Factorization of 217


7 217
31 31
1

Prime factors of 217 are 7,31. Prime factorization of 217 in exponential form is:

217 = 71×311

Prime Factorization of 218


2 218
109 109
1

Prime factors of 218 are 2,109. Prime factorization of 218 in exponential form is:

218 = 21×1091

∴ So by taking common prime factors GCF of 217 and 218 is 1

Greatest Common Factor of 217 and 218 by matching factors method

Factors of 217

List of positive integer factors of 217 that divides 217 without a remainder.

1,7,31,217

Factors of 218

List of positive integer factors of 218 that divides 218 without a remainder.

1,2,109,218

Greatest Common Factor

We found the factors and prime factorization of 217 and 218. The biggest common factor number is the GCF number.
So the greatest common factor 217 and 218 is 1.

Also check out the Least Common Multiple of 217 and 218

Properties of GCF 217 and 218

(i) The GCF of 217 and 218 is associative

GCF of 217 and 218 = GCF of 218 and 217

Related Greatest Common Factor of 217

Related Greatest Common Factor of 218

Frequently Asked Questions on GCF of 217 and 218

1. What is the GCF of 217 and 218?

Answer: GCF of 217 and 218 is 1.

2. What are the Factors of 217?

Answer: Factors of 217 are 1, 7, 31, 217. There are 4 integers that are factors of 217. The greatest factor of 217 is 217.

3. What are the Factors of 218?

Answer: Factors of 218 are 1, 2, 109, 218. There are 4 integers that are factors of 218. The greatest factor of 218 is 218.

4. How to Find the GCF of 217 and 218?

Answer:

Greatest Common Factor of 217 and 218 = 1

Step 1: Find the prime factorization of 217

217 = 7 x 31

Step 2: Find the prime factorization of 218

218 = 2 x 109

Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:

GCF = = 1

Step 4: Therefore, the greatest common factor of 217 and 218 is 1