Least Common Multiple (LCM) of 56 and 140
The least common multiple (LCM) of 56 and 140 is 280.
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 56 and 140?
First, calculate the GCD of 56 and 140 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 56 ÷ 140 = 0 remainder 56 |
| 2 | 140 ÷ 56 = 2 remainder 28 |
| 3 | 56 ÷ 28 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 153 and 117 | 1989 |
| 30 and 35 | 210 |
| 108 and 112 | 3024 |
| 144 and 17 | 2448 |
| 195 and 79 | 15405 |