# What is the Greatest Common Factor of 90 and 94?

Greatest common factor (GCF) of 90 and 94 is **2**.

GCF(90,94) = 2

We will now calculate the prime factors of **90 and 94**, than find the greatest common factor *(greatest common divisor (gcd))* of the numbers by matching the biggest common factor of 90 and 94.

## How to find the GCF of 90 and 94?

We will first find the prime factorization of 90 and 94. After we will calculate the factors of 90 and 94 and find the biggest common factor number .

### Step-1: Prime Factorization of 90

Prime factors of 90 are 2, 3, 5. Prime factorization of **90** in exponential form is:

90 = 2^{1} × 3^{2} × 5^{1}

### Step-2: Prime Factorization of 94

Prime factors of 94 are 2, 47. Prime factorization of **94** in exponential form is:

94 = 2^{1} × 47^{1}

### Step-3: Factors of 90

List of positive integer factors of 90 that divides 90 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45

### Step-4: Factors of 94

List of positive integer factors of 94 that divides 90 without a remainder.

1, 2, 47

#### Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 90 and 94. The biggest common factor number is the **GCF** number.

So the **greatest common factor 90 and 94** is **2**.

Also check out the Least Common Multiple of 90 and 94

#### Related Greatest Common Factors of 90

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