LCM of 131 and 155
20305 is the LCM of 131 and 155. 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 131 and 155, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 131 and 155?
lcm (131 155) = (?)
131 => 131
155 => 5 x 31
= 131 x 5 x 31
= 20305
lcm (131 and 155) = 20305
20305 is the LCM of 131 and 155.
where,
131 is a positive integer,
155 is a positive integer,
20305 is the LCM of 131 and 155,
There is no common factors of 131 and 155 in {131, 5 x 31},
{131 x 5 x 31} in {131, 5 x 31} are the uncommon factors of 131 and 155.
Use in Mathematics: LCM of 131 and 155
The below are some of the mathematical applications where lcm of 131 and 155 can be used:
- to find the least number which is exactly divisible by 131 and 155.
- to find the common denominator for two fractions having 131 and 155 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 131 and 155 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 131 seconds and bell B tolls at 155 seconds repeatedly. The answer is that all bells A and B toll together at 20305 seconds for the first time, at 40610 seconds for the second time, at 60915 seconds for the third time and so on.
Important Notes: 131 and 155 lcm
The below are the important notes to be remembered while solving the lcm of 131 and 155:
- The common prime factors and the remaining prime factors of 131 and 155 should be multiplied to find the least common multiple of 131 and 155, when solving lcm by using prime factors method.
- The results of lcm of 131 and 155, and the lcm of 155 and 131 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 131 and 155?
The below solved example with step by step work shows how to find what is the lcm of 131 and 155 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 131 and 155?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 131
B = 155
What to be found:
find the lcm of 131 and 155
step 2 Find the prime factors of 131 and 155:
Prime factors of 131 = 131
Prime factors of 155 = 5 x 31
step 3Identify the repeated and non-repeated prime factors of 131 and 155:
Since there is no common factors between 131 and 155, multiplying the given numbers directly provides the LCM of
131 and 155.
= 131 x 155
= 20305
lcm(131 and 155) = 20305
Hence,
lcm of 131 and 155 is 20305
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 131 and 155.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 131 and 155
What to be found:
lcm (131, 155) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
131 and 155
step 3 Choose the divisor which divides each or most of the given integers (131 and 155), 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 131 and 155 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 5 | 131 | 155 |
| 31 | 131 | 31 |
| 131 | 131 | 1 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 131 and 155:
= 5 x 31 x 131
= 20305
LCM(131, 155) = 20305
The LCM of two numbers 131 and 155 is 20305