Least Common Multiple (LCM) of 100 and 79
The least common multiple (LCM) of 100 and 79 is 7900.
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 100 and 79?
First, calculate the GCD of 100 and 79 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 100 ÷ 79 = 1 remainder 21 |
| 2 | 79 ÷ 21 = 3 remainder 16 |
| 3 | 21 ÷ 16 = 1 remainder 5 |
| 4 | 16 ÷ 5 = 3 remainder 1 |
| 5 | 5 ÷ 1 = 5 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 18 and 83 | 1494 |
| 91 and 55 | 5005 |
| 101 and 72 | 7272 |
| 170 and 47 | 7990 |
| 40 and 153 | 6120 |