Least Common Multiple (LCM) of 25 and 28
The least common multiple (LCM) of 25 and 28 is 700.
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 25 and 28?
First, calculate the GCD of 25 and 28 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 25 ÷ 28 = 0 remainder 25 |
| 2 | 28 ÷ 25 = 1 remainder 3 |
| 3 | 25 ÷ 3 = 8 remainder 1 |
| 4 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 136 and 151 | 20536 |
| 22 and 140 | 1540 |
| 98 and 137 | 13426 |
| 112 and 141 | 15792 |
| 140 and 199 | 27860 |