Least Common Multiple (LCM) of 77 and 65
The least common multiple (LCM) of 77 and 65 is 5005.
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 65?
First, calculate the GCD of 77 and 65 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 77 ÷ 65 = 1 remainder 12 |
| 2 | 65 ÷ 12 = 5 remainder 5 |
| 3 | 12 ÷ 5 = 2 remainder 2 |
| 4 | 5 ÷ 2 = 2 remainder 1 |
| 5 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 110 and 139 | 15290 |
| 17 and 143 | 2431 |
| 57 and 105 | 1995 |
| 111 and 74 | 222 |
| 102 and 192 | 3264 |