Least Common Multiple (LCM) of 77 and 105
The least common multiple (LCM) of 77 and 105 is 1155.
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 77 and 105?
First, calculate the GCD of 77 and 105 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 77 ÷ 105 = 0 remainder 77 |
| 2 | 105 ÷ 77 = 1 remainder 28 |
| 3 | 77 ÷ 28 = 2 remainder 21 |
| 4 | 28 ÷ 21 = 1 remainder 7 |
| 5 | 21 ÷ 7 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 110 and 136 | 7480 |
| 129 and 42 | 1806 |
| 193 and 39 | 7527 |
| 68 and 54 | 1836 |
| 167 and 90 | 15030 |