GCF for 45 and 15
"Greatest Common Factor" Calculator
What is the Greatest common Divisor of 45 and 15?
Answer: GCF of 45 and 15 is 15
(Fifteen)
Finding GCF for 45 and 15 using all factors (divisors) listing
The first method to find GCF for numbers 45 and 15 is to list all factors for both numbers and pick the highest common one:
All factors of 45: 1, 3, 5, 9, 15, 45
All factors of 15: 1, 3, 5, 15
So the Greatest Common Factor for 45 and 15 is 15
Finding GCF for 45 and 15 by Prime Factorization
The second method to find GCF for numbers 45 and 15 is to list all Prime Factors for both numbers and multiply the common ones:
All Prime Factors of 45: 3, 3, 5
All Prime Factors of 15: 3, 5
As we can see there are Prime Factors common to both numbers: 3, 5
Now we need to multiply them to find GCF: 3 × 5 = 15
Related Calculations
See Also
- Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
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 45 and 15? (The answer is: 15). Select the first number (e.g. '45') and the second number (e.g. '15'). 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
"Greatest Common Factor" Calculator
GCF Table
| Number 1 | Number 2 | GCF |
|---|---|---|
| 30 | 15 | 15 |
| 31 | 15 | 1 |
| 32 | 15 | 1 |
| 33 | 15 | 3 |
| 34 | 15 | 1 |
| 35 | 15 | 5 |
| 36 | 15 | 3 |
| 37 | 15 | 1 |
| 38 | 15 | 1 |
| 39 | 15 | 3 |
| 40 | 15 | 5 |
| 41 | 15 | 1 |
| 42 | 15 | 3 |
| 43 | 15 | 1 |
| 44 | 15 | 1 |
| 45 | 15 | 15 |
| 46 | 15 | 1 |
| 47 | 15 | 1 |
| 48 | 15 | 3 |
| 49 | 15 | 1 |
| 50 | 15 | 5 |
| 51 | 15 | 3 |
| 52 | 15 | 1 |
| 53 | 15 | 1 |
| 54 | 15 | 3 |
| 55 | 15 | 5 |
| 56 | 15 | 1 |
| 57 | 15 | 3 |
| 58 | 15 | 1 |
| 59 | 15 | 1 |
FAQ
What is the Greatest common Divisor of 45 and 15?
GCF of 45 and 15 is 15
See Also
- What is the GCF of 44 and 48
- What is the GCF of 44 and 55
- What is the GCF of 44 and 65
- What is the GCF of 44 and 66
- What is the GCF of 44 and 84
- What is the GCF of 44 and 88
- What is the GCF of 44 and 100
- What is the GCF of 44 and 110
- What is the GCF of 44 and 121
- What is the GCF of 44 and 132
- What is the GCF of 45 and 30
- What is the GCF of 45 and 48
- What is the GCF of 45 and 49
- What is the GCF of 45 and 50
- What is the GCF of 45 and 51
- What is the GCF of 45 and 54
- What is the GCF of 45 and 55
- What is the GCF of 45 and 56
- What is the GCF of 45 and 60
- What is the GCF of 45 and 63
- Наибольший общий делитель 45 и 15