Least Common Multiple (LCM) of 21 and 114
The least common multiple (LCM) of 21 and 114 is 798.
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 21 and 114?
First, calculate the GCD of 21 and 114 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 21 ÷ 114 = 0 remainder 21 |
| 2 | 114 ÷ 21 = 5 remainder 9 |
| 3 | 21 ÷ 9 = 2 remainder 3 |
| 4 | 9 ÷ 3 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 159 and 100 | 15900 |
| 191 and 197 | 37627 |
| 194 and 123 | 23862 |
| 30 and 97 | 2910 |
| 14 and 169 | 2366 |