Least Common Multiple (LCM) of 31 and 156
The least common multiple (LCM) of 31 and 156 is 4836.
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 156?
First, calculate the GCD of 31 and 156 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 31 ÷ 156 = 0 remainder 31 |
| 2 | 156 ÷ 31 = 5 remainder 1 |
| 3 | 31 ÷ 1 = 31 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 128 and 67 | 8576 |
| 112 and 104 | 1456 |
| 77 and 15 | 1155 |
| 39 and 168 | 2184 |
| 96 and 130 | 6240 |