Least Common Multiple (LCM) of 78 and 101
The least common multiple (LCM) of 78 and 101 is 7878.
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 101?
First, calculate the GCD of 78 and 101 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 78 ÷ 101 = 0 remainder 78 |
| 2 | 101 ÷ 78 = 1 remainder 23 |
| 3 | 78 ÷ 23 = 3 remainder 9 |
| 4 | 23 ÷ 9 = 2 remainder 5 |
| 5 | 9 ÷ 5 = 1 remainder 4 |
| 6 | 5 ÷ 4 = 1 remainder 1 |
| 7 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 48 and 135 | 2160 |
| 83 and 52 | 4316 |
| 105 and 23 | 2415 |
| 171 and 103 | 17613 |
| 26 and 68 | 884 |