Least Common Multiple (LCM) of 70 and 189
The least common multiple (LCM) of 70 and 189 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 70 and 189?
First, calculate the GCD of 70 and 189 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 70 ÷ 189 = 0 remainder 70 |
| 2 | 189 ÷ 70 = 2 remainder 49 |
| 3 | 70 ÷ 49 = 1 remainder 21 |
| 4 | 49 ÷ 21 = 2 remainder 7 |
| 5 | 21 ÷ 7 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 76 and 37 | 2812 |
| 22 and 185 | 4070 |
| 178 and 109 | 19402 |
| 50 and 182 | 4550 |
| 87 and 21 | 609 |