Greatest Common Factor of 120 and 121

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 120, 121 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 120 and 121 is 1.

GCF(120,121) = 1

GCF of 120 and 121

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

GCF of:
and

Greatest Common Factor of 120 and 121

GCF of 120 and 121 is 1

Prime Factorization of 120


2 120
2 60
2 30
3 15
5 5
1

Prime factors of 120 are 2,3,5. Prime factorization of 120 in exponential form is:

120 = 23×31×51

Prime Factorization of 121


11 121
11 11
1

Prime factors of 121 are 11. Prime factorization of 121 in exponential form is:

121 = 112

∴ So by taking common prime factors GCF of 120 and 121 is 1

Greatest Common Factor of 120 and 121 by matching factors method

Factors of 120

List of positive integer factors of 120 that divides 120 without a remainder.

1,2,3,4,5,6,8,10,12,15,20,24,30,40,60,120

Factors of 121

List of positive integer factors of 121 that divides 121 without a remainder.

1,11,121

Greatest Common Factor

We found the factors and prime factorization of 120 and 121. The biggest common factor number is the GCF number.
So the greatest common factor 120 and 121 is 1.

Also check out the Least Common Multiple of 120 and 121

Properties of GCF 120 and 121

(i) The GCF of 120 and 121 is associative

GCF of 120 and 121 = GCF of 121 and 120

Related Greatest Common Factor of 120

Related Greatest Common Factor of 121

Frequently Asked Questions on GCF of 120 and 121

1. What is the GCF of 120 and 121?

Answer: GCF of 120 and 121 is 1.

2. What are the Factors of 120?

Answer: Factors of 120 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120. There are 16 integers that are factors of 120. The greatest factor of 120 is 120.

3. What are the Factors of 121?

Answer: Factors of 121 are 1, 11, 121. There are 3 integers that are factors of 121. The greatest factor of 121 is 121.

4. How to Find the GCF of 120 and 121?

Answer:

Greatest Common Factor of 120 and 121 = 1

Step 1: Find the prime factorization of 120

120 = 2 x 2 x 2 x 3 x 5

Step 2: Find the prime factorization of 121

121 = 11 x 11

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 120 and 121 is 1