# What is the Greatest Common Factor of 133 and 152?

Greatest common factor (GCF) of 133 and 152 is 19.

GCF(133,152) = 19

We will now calculate the prime factors of 133 and 152, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 133 and 152.

GCF Calculator and
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## How to find the GCF of 133 and 152?

We will first find the prime factorization of 133 and 152. After we will calculate the factors of 133 and 152 and find the biggest common factor number .

### Step-1: Prime Factorization of 133

Prime factors of 133 are 7, 19. Prime factorization of 133 in exponential form is:

133 = 71 × 191

### Step-2: Prime Factorization of 152

Prime factors of 152 are 2, 19. Prime factorization of 152 in exponential form is:

152 = 23 × 191

### Step-3: Factors of 133

List of positive integer factors of 133 that divides 133 without a remainder.

1, 7, 19

### Step-4: Factors of 152

List of positive integer factors of 152 that divides 133 without a remainder.

1, 2, 4, 8, 19, 38, 76

#### Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 133 and 152. The biggest common factor number is the GCF number.
So the greatest common factor 133 and 152 is 19.

Also check out the Least Common Multiple of 133 and 152