Least Common Multiple (LCM) of 61 and 87
The least common multiple (LCM) of 61 and 87 is 5307.
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 87?
First, calculate the GCD of 61 and 87 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 61 ÷ 87 = 0 remainder 61 |
| 2 | 87 ÷ 61 = 1 remainder 26 |
| 3 | 61 ÷ 26 = 2 remainder 9 |
| 4 | 26 ÷ 9 = 2 remainder 8 |
| 5 | 9 ÷ 8 = 1 remainder 1 |
| 6 | 8 ÷ 1 = 8 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 115 and 174 | 20010 |
| 176 and 17 | 2992 |
| 165 and 91 | 15015 |
| 148 and 170 | 12580 |
| 186 and 112 | 10416 |