Least Common Multiple (LCM) of 61 and 91
The least common multiple (LCM) of 61 and 91 is 5551.
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 91?
First, calculate the GCD of 61 and 91 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 61 ÷ 91 = 0 remainder 61 |
| 2 | 91 ÷ 61 = 1 remainder 30 |
| 3 | 61 ÷ 30 = 2 remainder 1 |
| 4 | 30 ÷ 1 = 30 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 137 and 42 | 5754 |
| 139 and 172 | 23908 |
| 30 and 157 | 4710 |
| 198 and 165 | 990 |
| 32 and 122 | 1952 |