# What is the Greatest Common Factor of 47 and 61?

Greatest common factor (GCF) of 47 and 61 is 1.

GCF(47,61) = 1

We will now calculate the prime factors of 47 and 61, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 47 and 61.

GCF Calculator and
and

## How to find the GCF of 47 and 61?

We will first find the prime factorization of 47 and 61. After we will calculate the factors of 47 and 61 and find the biggest common factor number .

### Step-1: Prime Factorization of 47

Prime factors of 47 are 47. Prime factorization of 47 in exponential form is:

47 = 471

### Step-2: Prime Factorization of 61

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

61 = 611

### Step-3: Factors of 47

List of positive integer factors of 47 that divides 47 without a remainder.

1

### Step-4: Factors of 61

List of positive integer factors of 61 that divides 47 without a remainder.

1

#### Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 47 and 61. The biggest common factor number is the GCF number.
So the greatest common factor 47 and 61 is 1.

Also check out the Least Common Multiple of 47 and 61

#### Related Greatest Common Factors of 61

Please share your comments