Least Common Multiple (LCM) of 137 and 21
The least common multiple (LCM) of 137 and 21 is 2877.
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 137 and 21?
First, calculate the GCD of 137 and 21 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 137 ÷ 21 = 6 remainder 11 |
| 2 | 21 ÷ 11 = 1 remainder 10 |
| 3 | 11 ÷ 10 = 1 remainder 1 |
| 4 | 10 ÷ 1 = 10 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 155 and 82 | 12710 |
| 140 and 65 | 1820 |
| 173 and 37 | 6401 |
| 58 and 179 | 10382 |
| 144 and 147 | 7056 |