Least Common Multiple (LCM) of 91 and 139
The least common multiple (LCM) of 91 and 139 is 12649.
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 91 and 139?
First, calculate the GCD of 91 and 139 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 91 ÷ 139 = 0 remainder 91 |
| 2 | 139 ÷ 91 = 1 remainder 48 |
| 3 | 91 ÷ 48 = 1 remainder 43 |
| 4 | 48 ÷ 43 = 1 remainder 5 |
| 5 | 43 ÷ 5 = 8 remainder 3 |
| 6 | 5 ÷ 3 = 1 remainder 2 |
| 7 | 3 ÷ 2 = 1 remainder 1 |
| 8 | 2 ÷ 1 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 47 and 32 | 1504 |
| 140 and 56 | 280 |
| 16 and 123 | 1968 |
| 30 and 74 | 1110 |
| 105 and 93 | 3255 |