Least Common Multiple (LCM) of 115 and 157
The least common multiple (LCM) of 115 and 157 is 18055.
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 115 and 157?
First, calculate the GCD of 115 and 157 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 115 ÷ 157 = 0 remainder 115 |
| 2 | 157 ÷ 115 = 1 remainder 42 |
| 3 | 115 ÷ 42 = 2 remainder 31 |
| 4 | 42 ÷ 31 = 1 remainder 11 |
| 5 | 31 ÷ 11 = 2 remainder 9 |
| 6 | 11 ÷ 9 = 1 remainder 2 |
| 7 | 9 ÷ 2 = 4 remainder 1 |
| 8 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 28 and 55 | 1540 |
| 154 and 81 | 12474 |
| 171 and 99 | 1881 |
| 17 and 83 | 1411 |
| 152 and 168 | 3192 |