Least Common Multiple (LCM) of 74 and 61
The least common multiple (LCM) of 74 and 61 is 4514.
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 74 and 61?
First, calculate the GCD of 74 and 61 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 74 ÷ 61 = 1 remainder 13 |
| 2 | 61 ÷ 13 = 4 remainder 9 |
| 3 | 13 ÷ 9 = 1 remainder 4 |
| 4 | 9 ÷ 4 = 2 remainder 1 |
| 5 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 120 and 51 | 2040 |
| 170 and 104 | 8840 |
| 107 and 89 | 9523 |
| 28 and 80 | 560 |
| 171 and 29 | 4959 |