Least Common Multiple (LCM) of 51 and 72
The least common multiple (LCM) of 51 and 72 is 1224.
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 51 and 72?
First, calculate the GCD of 51 and 72 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 51 ÷ 72 = 0 remainder 51 |
| 2 | 72 ÷ 51 = 1 remainder 21 |
| 3 | 51 ÷ 21 = 2 remainder 9 |
| 4 | 21 ÷ 9 = 2 remainder 3 |
| 5 | 9 ÷ 3 = 3 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 15 and 61 | 915 |
| 137 and 155 | 21235 |
| 60 and 114 | 1140 |
| 154 and 134 | 10318 |
| 48 and 64 | 192 |