Least Common Multiple (LCM) of 125 and 171
The least common multiple (LCM) of 125 and 171 is 21375.
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 125 and 171?
First, calculate the GCD of 125 and 171 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 125 ÷ 171 = 0 remainder 125 |
| 2 | 171 ÷ 125 = 1 remainder 46 |
| 3 | 125 ÷ 46 = 2 remainder 33 |
| 4 | 46 ÷ 33 = 1 remainder 13 |
| 5 | 33 ÷ 13 = 2 remainder 7 |
| 6 | 13 ÷ 7 = 1 remainder 6 |
| 7 | 7 ÷ 6 = 1 remainder 1 |
| 8 | 6 ÷ 1 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 18 and 119 | 2142 |
| 85 and 21 | 1785 |
| 117 and 161 | 18837 |
| 102 and 137 | 13974 |
| 29 and 172 | 4988 |