Greatest Common Factor of 55 and 61

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 55, 61 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 55 and 61 is 1.

GCF(55,61) = 1

GCF of 55 and 61

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

GCF of:
and

Greatest Common Factor of 55 and 61

GCF of 55 and 61 is 1

Prime Factorization of 55


5 55
11 11
1

Prime factors of 55 are 5,11. Prime factorization of 55 in exponential form is:

55 = 51×111

Prime Factorization of 61


61 61
1

Prime factors of 61 are 61. Prime factorization of 61 in exponential form is:

61 = 611

∴ So by taking common prime factors GCF of 55 and 61 is 1

Greatest Common Factor of 55 and 61 by matching factors method

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

Greatest Common Factor

We found the factors and prime factorization of 55 and 61. The biggest common factor number is the GCF number.
So the greatest common factor 55 and 61 is 1.

Also check out the Least Common Multiple of 55 and 61

Properties of GCF 55 and 61

(i) The GCF of 55 and 61 is associative

GCF of 55 and 61 = GCF of 61 and 55

Related Greatest Common Factor of 55

Related Greatest Common Factor of 61

Frequently Asked Questions on GCF of 55 and 61

1. What is the GCF of 55 and 61?

Answer: GCF of 55 and 61 is 1.

2. What are the Factors of 55?

Answer: Factors of 55 are 1, 5, 11, 55. There are 4 integers that are factors of 55. The greatest factor of 55 is 55.

3. What are the Factors of 61?

Answer: Factors of 61 are 1, 61. There are 2 integers that are factors of 61. The greatest factor of 61 is 61.

4. How to Find the GCF of 55 and 61?

Answer:

Greatest Common Factor of 55 and 61 = 1

Step 1: Find the prime factorization of 55

55 = 5 x 11

Step 2: Find the prime factorization of 61

61 = 61

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 55 and 61 is 1