LCM of 129 and 159
6837 is the LCM of 129 and 159. 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 129 and 159, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 129 and 159?
lcm (129 159) = (?)
129 => 3 x 43
159 => 3 x 53
= 3 x 43 x 53
= 6837
lcm (129 and 159) = 6837
6837 is the LCM of 129 and 159.
where,
129 is a positive integer,
159 is a positive integer,
6837 is the LCM of 129 and 159,
{3} in {3 x 43, 3 x 53} is the common factors of 129 and 159,
{43 x 53} in {3 x 43, 3 x 53} are the uncommon factors of 129 and 159.
Use in Mathematics: LCM of 129 and 159
The below are some of the mathematical applications where lcm of 129 and 159 can be used:
- to find the least number which is exactly divisible by 129 and 159.
- to find the common denominator for two fractions having 129 and 159 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 129 and 159 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 129 seconds and bell B tolls at 159 seconds repeatedly. The answer is that all bells A and B toll together at 6837 seconds for the first time, at 13674 seconds for the second time, at 20511 seconds for the third time and so on.
Important Notes: 129 and 159 lcm
The below are the important notes to be remembered while solving the lcm of 129 and 159:
- The common prime factors and the remaining prime factors of 129 and 159 should be multiplied to find the least common multiple of 129 and 159, when solving lcm by using prime factors method.
- The results of lcm of 129 and 159, and the lcm of 159 and 129 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 129 and 159?
The below solved example with step by step work shows how to find what is the lcm of 129 and 159 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 129 and 159?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 129
B = 159
What to be found:
find the lcm of 129 and 159
step 2 Find the prime factors of 129 and 159:
Prime factors of 129 = 3 x 43
Prime factors of 159 = 3 x 53
step 3 Identify the repeated and non-repeated prime factors of 129 and 159:
{3} is the most repeated factor and {43 x 53} are the non-repeated factors of 129 and 159.
step 4 Find the product of repeated and non-repeated prime factors of 129 and 159:
= 3 x 43 x 53
= 6837
lcm(129 and 159) = 6837
Hence,
lcm of 129 and 159 is 6837
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 129 and 159.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 129 and 159
What to be found:
lcm (129, 159) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
129 and 159
step 3 Choose the divisor which divides each or most of the given integers (129 and 159), 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 129 and 159 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 3 | 129 | 159 |
| 43 | 43 | 53 |
| 53 | 1 | 53 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 129 and 159:
= 3 x 43 x 53
= 6837
LCM(129, 159) = 6837
The LCM of two numbers 129 and 159 is 6837