LCM of 249 and 320
79680 is the LCM of 249 and 320. The step-by-step solution using prime factors and special division methods is one of the simple methods to easily understand how to find what is the LCM of 249 and 320, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 249 and 320?
lcm (249 320) = (?)
249 => 3 x 83
320 => 2 x 2 x 2 x 2 x 2 x 2 x 5
= 3 x 83 x 2 x 2 x 2 x 2 x 2 x 2 x 5
= 79680
lcm (249 and 320) = 79680
79680 is the LCM of 249 and 320.
where,
249 is a positive integer,
320 is a positive integer,
79680 is the LCM of 249 and 320,
There is no common factors of 249 and 320 in {3 x 83, 2 x 2 x 2 x 2 x 2 x 2 x 5},
{3 x 83 x 2 x 2 x 2 x 2 x 2 x 2 x 5} in {3 x 83, 2 x 2 x 2 x 2 x 2 x 2 x 5} are the uncommon factors of 249 and 320.
Use in Mathematics: LCM of 249 and 320
The below are some of the mathematical applications where lcm of 249 and 320 can be used:
- to find the least number which is exactly divisible by 249 and 320.
- to find the common denominator for two fractions having 249 and 320 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 249 and 320 helps to find the exact time when two similar and recurring events with different time schedule happens together at the same time. For example, the real world problems involve lcm in situations to find at what time the bells A and B all toll together, if bell A tolls at 249 seconds and bell B tolls at 320 seconds repeatedly. The answer is that all bells A and B toll together at 79680 seconds for the first time, at 159360 seconds for the second time, at 239040 seconds for the third time and so on.
Important Notes: 249 and 320 lcm
The below are the important notes to be remembered while solving the lcm of 249 and 320:
- The common prime factors and the remaining prime factors of 249 and 320 should be multiplied to find the least common multiple of 249 and 320, when solving lcm by using prime factors method.
- The results of lcm of 249 and 320, and the lcm of 320 and 249 are identical, it means the order of given numbers in the lcm calculation doesn't affect the results.
How-to: What is the LCM of 249 and 320?
The below solved example with step by step work shows how to find what is the lcm of 249 and 320 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 249 and 320?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 249
B = 320
What to be found:
find the lcm of 249 and 320
step 2 Find the prime factors of 249 and 320:
Prime factors of 249 = 3 x 83
Prime factors of 320 = 2 x 2 x 2 x 2 x 2 x 2 x 5
step 3Identify the repeated and non-repeated prime factors of 249 and 320:
Since there is no common factors between 249 and 320, multiplying the given numbers directly provides the LCM of
249 and 320.
= 249 x 320
= 79680
lcm(249 and 320) = 79680
Hence,
lcm of 249 and 320 is 79680
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 249 and 320.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 249 and 320
What to be found:
lcm (249, 320) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
249 and 320
step 3 Choose the divisor which divides each or most of the given integers (249 and 320), divide each integers separately and write down the quotient in the next line right under the respective integers. Bring down the integer to the next line if any integer in 249 and 320 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 249 | 320 |
| 2 | 249 | 160 |
| 2 | 249 | 80 |
| 2 | 249 | 40 |
| 2 | 249 | 20 |
| 2 | 249 | 10 |
| 3 | 249 | 5 |
| 5 | 83 | 5 |
| 83 | 83 | 1 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 249 and 320:
= 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 83
= 79680
LCM(249, 320) = 79680
The LCM of two numbers 249 and 320 is 79680