Least Common Multiple (LCM) of 31 and 25
The least common multiple (LCM) of 31 and 25 is 775.
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 31 and 25?
First, calculate the GCD of 31 and 25 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 31 ÷ 25 = 1 remainder 6 |
| 2 | 25 ÷ 6 = 4 remainder 1 |
| 3 | 6 ÷ 1 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 93 and 46 | 4278 |
| 160 and 100 | 800 |
| 100 and 192 | 4800 |
| 180 and 189 | 3780 |
| 153 and 165 | 8415 |