LCM of 39 and 291
3783 is the LCM of 39 and 291. 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 39 and 291, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 39 and 291?
lcm (39 291) = (?)
39 => 3 x 13
291 => 3 x 97
= 3 x 13 x 97
= 3783
lcm (39 and 291) = 3783
3783 is the LCM of 39 and 291.
where,
39 is a positive integer,
291 is a positive integer,
3783 is the LCM of 39 and 291,
{3} in {3 x 13, 3 x 97} is the common factors of 39 and 291,
{13 x 97} in {3 x 13, 3 x 97} are the uncommon factors of 39 and 291.
Use in Mathematics: LCM of 39 and 291
The below are some of the mathematical applications where lcm of 39 and 291 can be used:
- to find the least number which is exactly divisible by 39 and 291.
- to find the common denominator for two fractions having 39 and 291 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 39 and 291 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 39 seconds and bell B tolls at 291 seconds repeatedly. The answer is that all bells A and B toll together at 3783 seconds for the first time, at 7566 seconds for the second time, at 11349 seconds for the third time and so on.
Important Notes: 39 and 291 lcm
The below are the important notes to be remembered while solving the lcm of 39 and 291:
- The common prime factors and the remaining prime factors of 39 and 291 should be multiplied to find the least common multiple of 39 and 291, when solving lcm by using prime factors method.
- The results of lcm of 39 and 291, and the lcm of 291 and 39 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 39 and 291?
The below solved example with step by step work shows how to find what is the lcm of 39 and 291 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 39 and 291?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 39
B = 291
What to be found:
find the lcm of 39 and 291
step 2 Find the prime factors of 39 and 291:
Prime factors of 39 = 3 x 13
Prime factors of 291 = 3 x 97
step 3 Identify the repeated and non-repeated prime factors of 39 and 291:
{3} is the most repeated factor and {13 x 97} are the non-repeated factors of 39 and 291.
step 4 Find the product of repeated and non-repeated prime factors of 39 and 291:
= 3 x 13 x 97
= 3783
lcm(39 and 291) = 3783
Hence,
lcm of 39 and 291 is 3783
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 39 and 291.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 39 and 291
What to be found:
lcm (39, 291) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
39 and 291
step 3 Choose the divisor which divides each or most of the given integers (39 and 291), 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 39 and 291 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 3 | 39 | 291 |
| 13 | 13 | 97 |
| 97 | 1 | 97 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 39 and 291:
= 3 x 13 x 97
= 3783
LCM(39, 291) = 3783
The LCM of two numbers 39 and 291 is 3783