Least Common Multiple (LCM) of 128 and 70
The least common multiple (LCM) of 128 and 70 is 4480.
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 128 and 70?
First, calculate the GCD of 128 and 70 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 128 ÷ 70 = 1 remainder 58 |
| 2 | 70 ÷ 58 = 1 remainder 12 |
| 3 | 58 ÷ 12 = 4 remainder 10 |
| 4 | 12 ÷ 10 = 1 remainder 2 |
| 5 | 10 ÷ 2 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 44 and 51 | 2244 |
| 185 and 73 | 13505 |
| 174 and 92 | 8004 |
| 52 and 162 | 4212 |
| 73 and 43 | 3139 |