Least Common Multiple (LCM) of 51 and 120
The least common multiple (LCM) of 51 and 120 is 2040.
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 51 and 120?
First, calculate the GCD of 51 and 120 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 51 ÷ 120 = 0 remainder 51 |
| 2 | 120 ÷ 51 = 2 remainder 18 |
| 3 | 51 ÷ 18 = 2 remainder 15 |
| 4 | 18 ÷ 15 = 1 remainder 3 |
| 5 | 15 ÷ 3 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 100 and 163 | 16300 |
| 162 and 159 | 8586 |
| 30 and 14 | 210 |
| 13 and 151 | 1963 |
| 65 and 151 | 9815 |