Least Common Multiple (LCM) of 123 and 65
The least common multiple (LCM) of 123 and 65 is 7995.
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 65?
First, calculate the GCD of 123 and 65 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 123 ÷ 65 = 1 remainder 58 |
| 2 | 65 ÷ 58 = 1 remainder 7 |
| 3 | 58 ÷ 7 = 8 remainder 2 |
| 4 | 7 ÷ 2 = 3 remainder 1 |
| 5 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 192 and 117 | 7488 |
| 81 and 35 | 2835 |
| 160 and 41 | 6560 |
| 48 and 46 | 1104 |
| 32 and 106 | 1696 |