Least Common Multiple (LCM) of 121 and 157
The least common multiple (LCM) of 121 and 157 is 18997.
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 121 and 157?
First, calculate the GCD of 121 and 157 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 121 ÷ 157 = 0 remainder 121 |
| 2 | 157 ÷ 121 = 1 remainder 36 |
| 3 | 121 ÷ 36 = 3 remainder 13 |
| 4 | 36 ÷ 13 = 2 remainder 10 |
| 5 | 13 ÷ 10 = 1 remainder 3 |
| 6 | 10 ÷ 3 = 3 remainder 1 |
| 7 | 3 ÷ 1 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 81 and 114 | 3078 |
| 172 and 51 | 8772 |
| 118 and 35 | 4130 |
| 184 and 59 | 10856 |
| 154 and 99 | 1386 |