Least Common Multiple (LCM) of 66 and 77
The least common multiple (LCM) of 66 and 77 is 462.
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 66 and 77?
First, calculate the GCD of 66 and 77 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 66 ÷ 77 = 0 remainder 66 |
| 2 | 77 ÷ 66 = 1 remainder 11 |
| 3 | 66 ÷ 11 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 176 and 61 | 10736 |
| 18 and 20 | 180 |
| 51 and 133 | 6783 |
| 178 and 87 | 15486 |
| 121 and 15 | 1815 |