Least Common Multiple (LCM) of 49 and 129
The least common multiple (LCM) of 49 and 129 is 6321.
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 49 and 129?
First, calculate the GCD of 49 and 129 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 49 ÷ 129 = 0 remainder 49 |
| 2 | 129 ÷ 49 = 2 remainder 31 |
| 3 | 49 ÷ 31 = 1 remainder 18 |
| 4 | 31 ÷ 18 = 1 remainder 13 |
| 5 | 18 ÷ 13 = 1 remainder 5 |
| 6 | 13 ÷ 5 = 2 remainder 3 |
| 7 | 5 ÷ 3 = 1 remainder 2 |
| 8 | 3 ÷ 2 = 1 remainder 1 |
| 9 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 103 and 76 | 7828 |
| 122 and 150 | 9150 |
| 11 and 140 | 1540 |
| 170 and 169 | 28730 |
| 75 and 11 | 825 |