Least Common Multiple (LCM) of 121 and 100
The least common multiple (LCM) of 121 and 100 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 121 and 100?
First, calculate the GCD of 121 and 100 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 121 ÷ 100 = 1 remainder 21 |
| 2 | 100 ÷ 21 = 4 remainder 16 |
| 3 | 21 ÷ 16 = 1 remainder 5 |
| 4 | 16 ÷ 5 = 3 remainder 1 |
| 5 | 5 ÷ 1 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 174 and 35 | 6090 |
| 108 and 92 | 2484 |
| 197 and 20 | 3940 |
| 186 and 58 | 5394 |
| 97 and 10 | 970 |