Least Common Multiple (LCM) of 121 and 30
The least common multiple (LCM) of 121 and 30 is 3630.
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 30?
First, calculate the GCD of 121 and 30 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 121 ÷ 30 = 4 remainder 1 |
| 2 | 30 ÷ 1 = 30 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 145 and 161 | 23345 |
| 16 and 115 | 1840 |
| 191 and 173 | 33043 |
| 183 and 176 | 32208 |
| 169 and 101 | 17069 |