Least Common Multiple (LCM) of 97 and 157
The least common multiple (LCM) of 97 and 157 is 15229.
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 97 and 157?
First, calculate the GCD of 97 and 157 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 97 ÷ 157 = 0 remainder 97 |
| 2 | 157 ÷ 97 = 1 remainder 60 |
| 3 | 97 ÷ 60 = 1 remainder 37 |
| 4 | 60 ÷ 37 = 1 remainder 23 |
| 5 | 37 ÷ 23 = 1 remainder 14 |
| 6 | 23 ÷ 14 = 1 remainder 9 |
| 7 | 14 ÷ 9 = 1 remainder 5 |
| 8 | 9 ÷ 5 = 1 remainder 4 |
| 9 | 5 ÷ 4 = 1 remainder 1 |
| 10 | 4 ÷ 1 = 4 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 129 and 81 | 3483 |
| 101 and 126 | 12726 |
| 165 and 75 | 825 |
| 170 and 126 | 10710 |
| 42 and 60 | 420 |