Least Common Multiple (LCM) of 121 and 65
The least common multiple (LCM) of 121 and 65 is 7865.
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 121 and 65?
First, calculate the GCD of 121 and 65 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 121 ÷ 65 = 1 remainder 56 |
| 2 | 65 ÷ 56 = 1 remainder 9 |
| 3 | 56 ÷ 9 = 6 remainder 2 |
| 4 | 9 ÷ 2 = 4 remainder 1 |
| 5 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 23 and 119 | 2737 |
| 169 and 21 | 3549 |
| 34 and 51 | 102 |
| 141 and 96 | 4512 |
| 23 and 39 | 897 |