Least Common Multiple (LCM) of 64 and 138
The least common multiple (LCM) of 64 and 138 is 4416.
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 64 and 138?
First, calculate the GCD of 64 and 138 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 64 ÷ 138 = 0 remainder 64 |
| 2 | 138 ÷ 64 = 2 remainder 10 |
| 3 | 64 ÷ 10 = 6 remainder 4 |
| 4 | 10 ÷ 4 = 2 remainder 2 |
| 5 | 4 ÷ 2 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 79 and 20 | 1580 |
| 80 and 72 | 720 |
| 55 and 78 | 4290 |
| 118 and 179 | 21122 |
| 35 and 104 | 3640 |