Least Common Multiple (LCM) of 69 and 31
The least common multiple (LCM) of 69 and 31 is 2139.
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 69 and 31?
First, calculate the GCD of 69 and 31 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 69 ÷ 31 = 2 remainder 7 |
| 2 | 31 ÷ 7 = 4 remainder 3 |
| 3 | 7 ÷ 3 = 2 remainder 1 |
| 4 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 108 and 179 | 19332 |
| 78 and 25 | 1950 |
| 53 and 196 | 10388 |
| 159 and 153 | 8109 |
| 199 and 180 | 35820 |