Least Common Multiple (LCM) of 38 and 31
The least common multiple (LCM) of 38 and 31 is 1178.
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 38 and 31?
First, calculate the GCD of 38 and 31 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 38 ÷ 31 = 1 remainder 7 |
| 2 | 31 ÷ 7 = 4 remainder 3 |
| 3 | 7 ÷ 3 = 2 remainder 1 |
| 4 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 122 and 141 | 17202 |
| 70 and 168 | 840 |
| 102 and 146 | 7446 |
| 136 and 188 | 6392 |
| 186 and 52 | 4836 |