Least Common Multiple (LCM) of 64 and 80
The least common multiple (LCM) of 64 and 80 is 320.
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 80?
First, calculate the GCD of 64 and 80 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 64 ÷ 80 = 0 remainder 64 |
| 2 | 80 ÷ 64 = 1 remainder 16 |
| 3 | 64 ÷ 16 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 133 and 50 | 6650 |
| 165 and 78 | 4290 |
| 121 and 132 | 1452 |
| 69 and 117 | 2691 |
| 42 and 85 | 3570 |