Least Common Multiple (LCM) of 123 and 64
The least common multiple (LCM) of 123 and 64 is 7872.
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 123 and 64?
First, calculate the GCD of 123 and 64 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 123 ÷ 64 = 1 remainder 59 |
| 2 | 64 ÷ 59 = 1 remainder 5 |
| 3 | 59 ÷ 5 = 11 remainder 4 |
| 4 | 5 ÷ 4 = 1 remainder 1 |
| 5 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 31 and 37 | 1147 |
| 82 and 114 | 4674 |
| 147 and 51 | 2499 |
| 65 and 165 | 2145 |
| 46 and 80 | 1840 |