Least Common Multiple (LCM) of 139 and 20
The least common multiple (LCM) of 139 and 20 is 2780.
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 139 and 20?
First, calculate the GCD of 139 and 20 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 139 ÷ 20 = 6 remainder 19 |
| 2 | 20 ÷ 19 = 1 remainder 1 |
| 3 | 19 ÷ 1 = 19 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 144 and 42 | 1008 |
| 176 and 186 | 16368 |
| 187 and 34 | 374 |
| 76 and 157 | 11932 |
| 83 and 17 | 1411 |