Least Common Multiple (LCM) of 78 and 127
The least common multiple (LCM) of 78 and 127 is 9906.
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 78 and 127?
First, calculate the GCD of 78 and 127 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 78 ÷ 127 = 0 remainder 78 |
| 2 | 127 ÷ 78 = 1 remainder 49 |
| 3 | 78 ÷ 49 = 1 remainder 29 |
| 4 | 49 ÷ 29 = 1 remainder 20 |
| 5 | 29 ÷ 20 = 1 remainder 9 |
| 6 | 20 ÷ 9 = 2 remainder 2 |
| 7 | 9 ÷ 2 = 4 remainder 1 |
| 8 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 152 and 155 | 23560 |
| 149 and 189 | 28161 |
| 186 and 184 | 17112 |
| 90 and 133 | 11970 |
| 63 and 103 | 6489 |