Least Common Multiple (LCM) of 45 and 79
The least common multiple (LCM) of 45 and 79 is 3555.
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 45 and 79?
First, calculate the GCD of 45 and 79 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 45 ÷ 79 = 0 remainder 45 |
| 2 | 79 ÷ 45 = 1 remainder 34 |
| 3 | 45 ÷ 34 = 1 remainder 11 |
| 4 | 34 ÷ 11 = 3 remainder 1 |
| 5 | 11 ÷ 1 = 11 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 25 and 181 | 4525 |
| 26 and 139 | 3614 |
| 180 and 47 | 8460 |
| 145 and 181 | 26245 |
| 138 and 61 | 8418 |