Least Common Multiple (LCM) of 18 and 70
The least common multiple (LCM) of 18 and 70 is 630.
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 18 and 70?
First, calculate the GCD of 18 and 70 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 18 ÷ 70 = 0 remainder 18 |
| 2 | 70 ÷ 18 = 3 remainder 16 |
| 3 | 18 ÷ 16 = 1 remainder 2 |
| 4 | 16 ÷ 2 = 8 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 149 and 153 | 22797 |
| 63 and 141 | 2961 |
| 61 and 159 | 9699 |
| 153 and 117 | 1989 |
| 179 and 154 | 27566 |