Least Common Multiple (LCM) of 140 and 87
The least common multiple (LCM) of 140 and 87 is 12180.
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 140 and 87?
First, calculate the GCD of 140 and 87 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 140 ÷ 87 = 1 remainder 53 |
| 2 | 87 ÷ 53 = 1 remainder 34 |
| 3 | 53 ÷ 34 = 1 remainder 19 |
| 4 | 34 ÷ 19 = 1 remainder 15 |
| 5 | 19 ÷ 15 = 1 remainder 4 |
| 6 | 15 ÷ 4 = 3 remainder 3 |
| 7 | 4 ÷ 3 = 1 remainder 1 |
| 8 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 170 and 197 | 33490 |
| 190 and 169 | 32110 |
| 27 and 91 | 2457 |
| 108 and 161 | 17388 |
| 103 and 74 | 7622 |