Least Common Multiple (LCM) of 81 and 26
The least common multiple (LCM) of 81 and 26 is 2106.
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 26?
First, calculate the GCD of 81 and 26 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 81 ÷ 26 = 3 remainder 3 |
| 2 | 26 ÷ 3 = 8 remainder 2 |
| 3 | 3 ÷ 2 = 1 remainder 1 |
| 4 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 90 and 69 | 2070 |
| 88 and 87 | 7656 |
| 152 and 139 | 21128 |
| 15 and 49 | 735 |
| 189 and 98 | 2646 |