Least Common Multiple (LCM) of 85 and 138
The least common multiple (LCM) of 85 and 138 is 11730.
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 85 and 138?
First, calculate the GCD of 85 and 138 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 85 ÷ 138 = 0 remainder 85 |
| 2 | 138 ÷ 85 = 1 remainder 53 |
| 3 | 85 ÷ 53 = 1 remainder 32 |
| 4 | 53 ÷ 32 = 1 remainder 21 |
| 5 | 32 ÷ 21 = 1 remainder 11 |
| 6 | 21 ÷ 11 = 1 remainder 10 |
| 7 | 11 ÷ 10 = 1 remainder 1 |
| 8 | 10 ÷ 1 = 10 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 51 and 87 | 1479 |
| 29 and 83 | 2407 |
| 81 and 162 | 162 |
| 140 and 186 | 13020 |
| 57 and 33 | 627 |