Greatest Common Factor of 215 and 221

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 215, 221 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 215 and 221 is 1.

GCF(215,221) = 1

GCF of 215 and 221

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

GCF of:
and

Greatest Common Factor of 215 and 221

GCF of 215 and 221 is 1

Prime Factorization of 215


5 215
43 43
1

Prime factors of 215 are 5,43. Prime factorization of 215 in exponential form is:

215 = 51×431

Prime Factorization of 221


13 221
17 17
1

Prime factors of 221 are 13,17. Prime factorization of 221 in exponential form is:

221 = 131×171

∴ So by taking common prime factors GCF of 215 and 221 is 1

Greatest Common Factor of 215 and 221 by matching factors method

Factors of 215

List of positive integer factors of 215 that divides 215 without a remainder.

1,5,43,215

Factors of 221

List of positive integer factors of 221 that divides 221 without a remainder.

1,13,17,221

Greatest Common Factor

We found the factors and prime factorization of 215 and 221. The biggest common factor number is the GCF number.
So the greatest common factor 215 and 221 is 1.

Also check out the Least Common Multiple of 215 and 221

Properties of GCF 215 and 221

(i) The GCF of 215 and 221 is associative

GCF of 215 and 221 = GCF of 221 and 215

Related Greatest Common Factor of 215

Related Greatest Common Factor of 221

Frequently Asked Questions on GCF of 215 and 221

1. What is the GCF of 215 and 221?

Answer: GCF of 215 and 221 is 1.

2. What are the Factors of 215?

Answer: Factors of 215 are 1, 5, 43, 215. There are 4 integers that are factors of 215. The greatest factor of 215 is 215.

3. What are the Factors of 221?

Answer: Factors of 221 are 1, 13, 17, 221. There are 4 integers that are factors of 221. The greatest factor of 221 is 221.

4. How to Find the GCF of 215 and 221?

Answer:

Greatest Common Factor of 215 and 221 = 1

Step 1: Find the prime factorization of 215

215 = 5 x 43

Step 2: Find the prime factorization of 221

221 = 13 x 17

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 215 and 221 is 1