Least Common Multiple (LCM) of 28 and 160
The least common multiple (LCM) of 28 and 160 is 1120.
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 28 and 160?
First, calculate the GCD of 28 and 160 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 28 ÷ 160 = 0 remainder 28 |
| 2 | 160 ÷ 28 = 5 remainder 20 |
| 3 | 28 ÷ 20 = 1 remainder 8 |
| 4 | 20 ÷ 8 = 2 remainder 4 |
| 5 | 8 ÷ 4 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 141 and 140 | 19740 |
| 15 and 42 | 210 |
| 29 and 108 | 3132 |
| 161 and 103 | 16583 |
| 105 and 121 | 12705 |