GCF for 154 and 198
"Greatest Common Factor" Calculator
What is the Greatest common Divisor of 154 and 198?
Answer: GCF of 154 and 198 is 22
(Twenty-two)
Finding GCF for 154 and 198 using all factors (divisors) listing
The first method to find GCF for numbers 154 and 198 is to list all factors for both numbers and pick the highest common one:
All factors of 154: 1, 2, 7, 11, 14, 22, 77, 154
All factors of 198: 1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198
So the Greatest Common Factor for 154 and 198 is 22
Finding GCF for 154 and 198 by Prime Factorization
The second method to find GCF for numbers 154 and 198 is to list all Prime Factors for both numbers and multiply the common ones:
All Prime Factors of 154: 2, 7, 11
All Prime Factors of 198: 2, 3, 3, 11
As we can see there are Prime Factors common to both numbers: 2, 11
Now we need to multiply them to find GCF: 2 × 11 = 22
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GCF Table
| Number 1 | Number 2 | GCF |
|---|---|---|
| 139 | 198 | 1 |
| 140 | 198 | 2 |
| 141 | 198 | 3 |
| 142 | 198 | 2 |
| 143 | 198 | 11 |
| 144 | 198 | 18 |
| 145 | 198 | 1 |
| 146 | 198 | 2 |
| 147 | 198 | 3 |
| 148 | 198 | 2 |
| 149 | 198 | 1 |
| 150 | 198 | 6 |
| 151 | 198 | 1 |
| 152 | 198 | 2 |
| 153 | 198 | 9 |
| 154 | 198 | 22 |
| 155 | 198 | 1 |
| 156 | 198 | 6 |
| 157 | 198 | 1 |
| 158 | 198 | 2 |
| 159 | 198 | 3 |
| 160 | 198 | 2 |
| 161 | 198 | 1 |
| 162 | 198 | 18 |
| 163 | 198 | 1 |
| 164 | 198 | 2 |
| 165 | 198 | 33 |
| 166 | 198 | 2 |
| 167 | 198 | 1 |
| 168 | 198 | 6 |
About "Greatest Common Factor" Calculator
This calculator will help you find the greatest common factor (GCF) of two numbers. For example, it can help you find out what is the Greatest common Divisor of 154 and 198? (The answer is: 22). Select the first number (e.g. '154') and the second number (e.g. '198'). After that hit the 'Calculate' button.
Greatest Common Factor (GCF) also known as the Greatest Common Divisor (GCD) or Highest Common Factor (HCF) - it is the largest positive integer that divides each of the integers with zero remainder