Least Common Multiple (LCM) of 98 and 77
The least common multiple (LCM) of 98 and 77 is 1078.
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 98 and 77?
First, calculate the GCD of 98 and 77 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 98 ÷ 77 = 1 remainder 21 |
| 2 | 77 ÷ 21 = 3 remainder 14 |
| 3 | 21 ÷ 14 = 1 remainder 7 |
| 4 | 14 ÷ 7 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 189 and 88 | 16632 |
| 42 and 104 | 2184 |
| 186 and 153 | 9486 |
| 190 and 182 | 17290 |
| 138 and 197 | 27186 |