Least Common Multiple (LCM) of 87 and 142
The least common multiple (LCM) of 87 and 142 is 12354.
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 87 and 142?
First, calculate the GCD of 87 and 142 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 87 ÷ 142 = 0 remainder 87 |
| 2 | 142 ÷ 87 = 1 remainder 55 |
| 3 | 87 ÷ 55 = 1 remainder 32 |
| 4 | 55 ÷ 32 = 1 remainder 23 |
| 5 | 32 ÷ 23 = 1 remainder 9 |
| 6 | 23 ÷ 9 = 2 remainder 5 |
| 7 | 9 ÷ 5 = 1 remainder 4 |
| 8 | 5 ÷ 4 = 1 remainder 1 |
| 9 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 72 and 59 | 4248 |
| 13 and 67 | 871 |
| 62 and 21 | 1302 |
| 12 and 97 | 1164 |
| 131 and 90 | 11790 |