Least Common Multiple (LCM) of 173 and 90
The least common multiple (LCM) of 173 and 90 is 15570.
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 173 and 90?
First, calculate the GCD of 173 and 90 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 173 ÷ 90 = 1 remainder 83 |
| 2 | 90 ÷ 83 = 1 remainder 7 |
| 3 | 83 ÷ 7 = 11 remainder 6 |
| 4 | 7 ÷ 6 = 1 remainder 1 |
| 5 | 6 ÷ 1 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 127 and 21 | 2667 |
| 108 and 142 | 7668 |
| 151 and 81 | 12231 |
| 140 and 72 | 2520 |
| 178 and 42 | 3738 |