Least Common Multiple (LCM) of 138 and 115
The least common multiple (LCM) of 138 and 115 is 690.
What is the Least Common Multiple (LCM)?
The LCM of two integers is the smallest positive integer that is divisible by both numbers. It is often used to find common denominators and solve problems involving periodic events.
Formula for LCM
The LCM of two numbers can be calculated using their GCD:
LCM(a, b) = |a × b| ÷ GCD(a, b)
How to Calculate the LCM of 138 and 115?
First, calculate the GCD of 138 and 115 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 138 ÷ 115 = 1 remainder 23 |
| 2 | 115 ÷ 23 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 54 and 150 | 1350 |
| 101 and 74 | 7474 |
| 140 and 192 | 6720 |
| 48 and 85 | 4080 |
| 51 and 108 | 1836 |