Least Common Multiple (LCM) of 77 and 64
The least common multiple (LCM) of 77 and 64 is 4928.
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 64?
First, calculate the GCD of 77 and 64 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 77 ÷ 64 = 1 remainder 13 |
| 2 | 64 ÷ 13 = 4 remainder 12 |
| 3 | 13 ÷ 12 = 1 remainder 1 |
| 4 | 12 ÷ 1 = 12 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 132 and 91 | 12012 |
| 194 and 17 | 3298 |
| 40 and 86 | 1720 |
| 102 and 74 | 3774 |
| 117 and 128 | 14976 |