Least Common Multiple (LCM) of 154 and 172
The least common multiple (LCM) of 154 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 154 and 172?
First, calculate the GCD of 154 and 172 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 154 ÷ 172 = 0 remainder 154 |
| 2 | 172 ÷ 154 = 1 remainder 18 |
| 3 | 154 ÷ 18 = 8 remainder 10 |
| 4 | 18 ÷ 10 = 1 remainder 8 |
| 5 | 10 ÷ 8 = 1 remainder 2 |
| 6 | 8 ÷ 2 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 17 and 10 | 170 |
| 47 and 38 | 1786 |
| 98 and 74 | 3626 |
| 81 and 188 | 15228 |
| 140 and 99 | 13860 |