Least Common Multiple (LCM) of 65 and 31
The least common multiple (LCM) of 65 and 31 is 2015.
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 65 and 31?
First, calculate the GCD of 65 and 31 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 65 ÷ 31 = 2 remainder 3 |
| 2 | 31 ÷ 3 = 10 remainder 1 |
| 3 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 97 and 12 | 1164 |
| 87 and 78 | 2262 |
| 166 and 52 | 4316 |
| 24 and 15 | 120 |
| 128 and 12 | 384 |