Least Common Multiple (LCM) of 191 and 157
The least common multiple (LCM) of 191 and 157 is 29987.
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 191 and 157?
First, calculate the GCD of 191 and 157 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 191 ÷ 157 = 1 remainder 34 |
| 2 | 157 ÷ 34 = 4 remainder 21 |
| 3 | 34 ÷ 21 = 1 remainder 13 |
| 4 | 21 ÷ 13 = 1 remainder 8 |
| 5 | 13 ÷ 8 = 1 remainder 5 |
| 6 | 8 ÷ 5 = 1 remainder 3 |
| 7 | 5 ÷ 3 = 1 remainder 2 |
| 8 | 3 ÷ 2 = 1 remainder 1 |
| 9 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 199 and 25 | 4975 |
| 38 and 28 | 532 |
| 42 and 11 | 462 |
| 36 and 158 | 2844 |
| 37 and 171 | 6327 |