LCM for 9 and 15
"Least Common Multiple" Calculator
What's the Least Common Multiple (LCM) of 9 and 15?
Answer: LCM of 9 and 15 is 45
(Forty-five)
Finding LCM for 9 and 15 using GCF's of these numbers
The first method to find LCM for numbers 9 and 15 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:
LCM = (Number1 × Number2) ÷ GCF
GCF of numbers 9 and 15 is 3, so
LCM = (9 × 15) ÷ 3
LCM = 135 ÷ 3
LCM = 45
Finding LCM for 9 and 15 by Listing Multiples
The second method to find LCM for numbers 9 and 15 is to list out the common multiples for both nubmers and pick the first which matching:
Multiples of 9: 9, 18, 27, 36, 45, 54, 63
Multiples of 15: 15, 30, 45, 60, 75
So the LCM for 9 and 15 is 45
Finding LCM for 9 and 15 by Prime Factorization
Another method to find LCM for numbers 9 and 15 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:
All Prime Factors of 9: 3, 3 (exponent form: 32)
All Prime Factors of 15: 3, 5 (exponent form: 31, 51)
32 × 51 = 45
Related Calculations
Share This Calculation
Print
<a href="https://calculat.io/en/number/least-common-multiple-lcm-of/9--15">What is the LCM of 9 and 15? - Calculatio</a>
LCM Table
About "Least Common Multiple" Calculator
This calculator will help you find the Least Common Multiple (LCM) of two numbers. For example, it can help you find out what's the Least Common Multiple (LCM) of 9 and 15? (The answer is: 45). Select the first number (e.g. '9') and the second number (e.g. '15'). After that hit the 'Calculate' button.
Least Common Multiple (LCM) also known as the Lowest Common Multiple or Smallest Common Multiple of 2 numbers - it is the smallest positive integer that is divisible by both numbers