Least Common Multiple (LCM) of 169 and 61
The least common multiple (LCM) of 169 and 61 is 10309.
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 169 and 61?
First, calculate the GCD of 169 and 61 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 169 ÷ 61 = 2 remainder 47 |
| 2 | 61 ÷ 47 = 1 remainder 14 |
| 3 | 47 ÷ 14 = 3 remainder 5 |
| 4 | 14 ÷ 5 = 2 remainder 4 |
| 5 | 5 ÷ 4 = 1 remainder 1 |
| 6 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 103 and 194 | 19982 |
| 198 and 152 | 15048 |
| 187 and 138 | 25806 |
| 121 and 136 | 16456 |
| 72 and 100 | 1800 |