Least Common Multiple (LCM) of 81 and 58
The least common multiple (LCM) of 81 and 58 is 4698.
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 81 and 58?
First, calculate the GCD of 81 and 58 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 81 ÷ 58 = 1 remainder 23 |
| 2 | 58 ÷ 23 = 2 remainder 12 |
| 3 | 23 ÷ 12 = 1 remainder 11 |
| 4 | 12 ÷ 11 = 1 remainder 1 |
| 5 | 11 ÷ 1 = 11 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 87 and 128 | 11136 |
| 175 and 166 | 29050 |
| 161 and 42 | 966 |
| 71 and 145 | 10295 |
| 102 and 38 | 1938 |