Least Common Multiple (LCM) of 145 and 189
The least common multiple (LCM) of 145 and 189 is 27405.
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 145 and 189?
First, calculate the GCD of 145 and 189 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 145 ÷ 189 = 0 remainder 145 |
| 2 | 189 ÷ 145 = 1 remainder 44 |
| 3 | 145 ÷ 44 = 3 remainder 13 |
| 4 | 44 ÷ 13 = 3 remainder 5 |
| 5 | 13 ÷ 5 = 2 remainder 3 |
| 6 | 5 ÷ 3 = 1 remainder 2 |
| 7 | 3 ÷ 2 = 1 remainder 1 |
| 8 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 39 and 64 | 2496 |
| 42 and 194 | 4074 |
| 109 and 190 | 20710 |
| 120 and 66 | 1320 |
| 32 and 59 | 1888 |