Least Common Multiple (LCM) of 61 and 23
The least common multiple (LCM) of 61 and 23 is 1403.
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 61 and 23?
First, calculate the GCD of 61 and 23 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 61 ÷ 23 = 2 remainder 15 |
| 2 | 23 ÷ 15 = 1 remainder 8 |
| 3 | 15 ÷ 8 = 1 remainder 7 |
| 4 | 8 ÷ 7 = 1 remainder 1 |
| 5 | 7 ÷ 1 = 7 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 143 and 82 | 11726 |
| 90 and 44 | 1980 |
| 109 and 111 | 12099 |
| 141 and 172 | 24252 |
| 160 and 46 | 3680 |