Least Common Multiple (LCM) of 13 and 139
The least common multiple (LCM) of 13 and 139 is 1807.
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 13 and 139?
First, calculate the GCD of 13 and 139 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 13 ÷ 139 = 0 remainder 13 |
| 2 | 139 ÷ 13 = 10 remainder 9 |
| 3 | 13 ÷ 9 = 1 remainder 4 |
| 4 | 9 ÷ 4 = 2 remainder 1 |
| 5 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 85 and 20 | 340 |
| 182 and 72 | 6552 |
| 145 and 104 | 15080 |
| 104 and 161 | 16744 |
| 143 and 139 | 19877 |