Least Common Multiple (LCM) of 72 and 77
The least common multiple (LCM) of 72 and 77 is 5544.
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 72 and 77?
First, calculate the GCD of 72 and 77 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 72 ÷ 77 = 0 remainder 72 |
| 2 | 77 ÷ 72 = 1 remainder 5 |
| 3 | 72 ÷ 5 = 14 remainder 2 |
| 4 | 5 ÷ 2 = 2 remainder 1 |
| 5 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 75 and 28 | 2100 |
| 58 and 107 | 6206 |
| 115 and 103 | 11845 |
| 63 and 21 | 63 |
| 53 and 86 | 4558 |