Least Common Multiple (LCM) of 120 and 77
The least common multiple (LCM) of 120 and 77 is 9240.
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 120 and 77?
First, calculate the GCD of 120 and 77 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 120 ÷ 77 = 1 remainder 43 |
| 2 | 77 ÷ 43 = 1 remainder 34 |
| 3 | 43 ÷ 34 = 1 remainder 9 |
| 4 | 34 ÷ 9 = 3 remainder 7 |
| 5 | 9 ÷ 7 = 1 remainder 2 |
| 6 | 7 ÷ 2 = 3 remainder 1 |
| 7 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 193 and 137 | 26441 |
| 12 and 59 | 708 |
| 127 and 113 | 14351 |
| 73 and 70 | 5110 |
| 183 and 196 | 35868 |