Least Common Multiple (LCM) of 72 and 70
The least common multiple (LCM) of 72 and 70 is 2520.
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 72 and 70?
First, calculate the GCD of 72 and 70 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 72 ÷ 70 = 1 remainder 2 |
| 2 | 70 ÷ 2 = 35 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 155 and 109 | 16895 |
| 96 and 147 | 4704 |
| 102 and 147 | 4998 |
| 144 and 119 | 17136 |
| 101 and 128 | 12928 |