Least Common Multiple (LCM) of 100 and 121
The least common multiple (LCM) of 100 and 121 is 12100.
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 100 and 121?
First, calculate the GCD of 100 and 121 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 100 ÷ 121 = 0 remainder 100 |
| 2 | 121 ÷ 100 = 1 remainder 21 |
| 3 | 100 ÷ 21 = 4 remainder 16 |
| 4 | 21 ÷ 16 = 1 remainder 5 |
| 5 | 16 ÷ 5 = 3 remainder 1 |
| 6 | 5 ÷ 1 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 166 and 117 | 19422 |
| 19 and 116 | 2204 |
| 157 and 122 | 19154 |
| 172 and 91 | 15652 |
| 15 and 187 | 2805 |