Least Common Multiple (LCM) of 31 and 102
The least common multiple (LCM) of 31 and 102 is 3162.
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 31 and 102?
First, calculate the GCD of 31 and 102 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 31 ÷ 102 = 0 remainder 31 |
| 2 | 102 ÷ 31 = 3 remainder 9 |
| 3 | 31 ÷ 9 = 3 remainder 4 |
| 4 | 9 ÷ 4 = 2 remainder 1 |
| 5 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 199 and 15 | 2985 |
| 123 and 185 | 22755 |
| 96 and 135 | 4320 |
| 96 and 68 | 1632 |
| 21 and 13 | 273 |