Least Common Multiple (LCM) of 56 and 121
The least common multiple (LCM) of 56 and 121 is 6776.
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 56 and 121?
First, calculate the GCD of 56 and 121 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 56 ÷ 121 = 0 remainder 56 |
| 2 | 121 ÷ 56 = 2 remainder 9 |
| 3 | 56 ÷ 9 = 6 remainder 2 |
| 4 | 9 ÷ 2 = 4 remainder 1 |
| 5 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 172 and 174 | 14964 |
| 138 and 55 | 7590 |
| 165 and 24 | 1320 |
| 21 and 187 | 3927 |
| 84 and 78 | 1092 |