Least Common Multiple (LCM) of 77 and 140
The least common multiple (LCM) of 77 and 140 is 1540.
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 140?
First, calculate the GCD of 77 and 140 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 77 ÷ 140 = 0 remainder 77 |
| 2 | 140 ÷ 77 = 1 remainder 63 |
| 3 | 77 ÷ 63 = 1 remainder 14 |
| 4 | 63 ÷ 14 = 4 remainder 7 |
| 5 | 14 ÷ 7 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 158 and 11 | 1738 |
| 110 and 148 | 8140 |
| 84 and 190 | 7980 |
| 124 and 56 | 1736 |
| 71 and 34 | 2414 |