Least Common Multiple (LCM) of 121 and 55
The least common multiple (LCM) of 121 and 55 is 605.
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 121 and 55?
First, calculate the GCD of 121 and 55 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 121 ÷ 55 = 2 remainder 11 |
| 2 | 55 ÷ 11 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 68 and 40 | 680 |
| 157 and 46 | 7222 |
| 117 and 132 | 5148 |
| 41 and 93 | 3813 |
| 170 and 122 | 10370 |