# What is the Greatest Common Factor of 43 and 53?

Greatest common factor (GCF) of 43 and 53 is 1.

GCF(43,53) = 1

We will now calculate the prime factors of 43 and 53, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 43 and 53.

GCF Calculator and
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## How to find the GCF of 43 and 53?

We will first find the prime factorization of 43 and 53. After we will calculate the factors of 43 and 53 and find the biggest common factor number .

### Step-1: Prime Factorization of 43

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

43 = 431

### Step-2: Prime Factorization of 53

Prime factors of 53 are 53. Prime factorization of 53 in exponential form is:

53 = 531

### Step-3: Factors of 43

List of positive integer factors of 43 that divides 43 without a remainder.

1

### Step-4: Factors of 53

List of positive integer factors of 53 that divides 43 without a remainder.

1

#### Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 43 and 53. The biggest common factor number is the GCF number.
So the greatest common factor 43 and 53 is 1.

Also check out the Least Common Multiple of 43 and 53