Least Common Multiple (LCM) of 189 and 70
The least common multiple (LCM) of 189 and 70 is 1890.
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 189 and 70?
First, calculate the GCD of 189 and 70 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 189 ÷ 70 = 2 remainder 49 |
| 2 | 70 ÷ 49 = 1 remainder 21 |
| 3 | 49 ÷ 21 = 2 remainder 7 |
| 4 | 21 ÷ 7 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 155 and 136 | 21080 |
| 49 and 25 | 1225 |
| 131 and 55 | 7205 |
| 103 and 94 | 9682 |
| 104 and 24 | 312 |