Least Common Multiple (LCM) of 87 and 141
The least common multiple (LCM) of 87 and 141 is 4089.
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 141?
First, calculate the GCD of 87 and 141 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 87 ÷ 141 = 0 remainder 87 |
| 2 | 141 ÷ 87 = 1 remainder 54 |
| 3 | 87 ÷ 54 = 1 remainder 33 |
| 4 | 54 ÷ 33 = 1 remainder 21 |
| 5 | 33 ÷ 21 = 1 remainder 12 |
| 6 | 21 ÷ 12 = 1 remainder 9 |
| 7 | 12 ÷ 9 = 1 remainder 3 |
| 8 | 9 ÷ 3 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 49 and 47 | 2303 |
| 44 and 62 | 1364 |
| 151 and 139 | 20989 |
| 89 and 72 | 6408 |
| 109 and 56 | 6104 |