Least Common Multiple (LCM) of 77 and 172
The least common multiple (LCM) of 77 and 172 is 13244.
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 172?
First, calculate the GCD of 77 and 172 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 77 ÷ 172 = 0 remainder 77 |
| 2 | 172 ÷ 77 = 2 remainder 18 |
| 3 | 77 ÷ 18 = 4 remainder 5 |
| 4 | 18 ÷ 5 = 3 remainder 3 |
| 5 | 5 ÷ 3 = 1 remainder 2 |
| 6 | 3 ÷ 2 = 1 remainder 1 |
| 7 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 156 and 80 | 3120 |
| 162 and 69 | 3726 |
| 111 and 135 | 4995 |
| 23 and 27 | 621 |
| 129 and 70 | 9030 |