LCM of 168 and 298
25032 is the LCM of 168 and 298. 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 168 and 298, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 168 and 298?
lcm (168 298) = (?)
168 => 2 x 2 x 2 x 3 x 7
298 => 2 x 149
= 2 x 2 x 2 x 3 x 7 x 149
= 25032
lcm (168 and 298) = 25032
25032 is the LCM of 168 and 298.
where,
168 is a positive integer,
298 is a positive integer,
25032 is the LCM of 168 and 298,
{2} in {2 x 2 x 2 x 3 x 7, 2 x 149} is the common factors of 168 and 298,
{2 x 2 x 3 x 7 x 149} in {2 x 2 x 2 x 3 x 7, 2 x 149} are the uncommon factors of 168 and 298.
Use in Mathematics: LCM of 168 and 298
The below are some of the mathematical applications where lcm of 168 and 298 can be used:
- to find the least number which is exactly divisible by 168 and 298.
- to find the common denominator for two fractions having 168 and 298 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 168 and 298 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 168 seconds and bell B tolls at 298 seconds repeatedly. The answer is that all bells A and B toll together at 25032 seconds for the first time, at 50064 seconds for the second time, at 75096 seconds for the third time and so on.
Important Notes: 168 and 298 lcm
The below are the important notes to be remembered while solving the lcm of 168 and 298:
- The common prime factors and the remaining prime factors of 168 and 298 should be multiplied to find the least common multiple of 168 and 298, when solving lcm by using prime factors method.
- The results of lcm of 168 and 298, and the lcm of 298 and 168 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 168 and 298?
The below solved example with step by step work shows how to find what is the lcm of 168 and 298 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 168 and 298?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 168
B = 298
What to be found:
find the lcm of 168 and 298
step 2 Find the prime factors of 168 and 298:
Prime factors of 168 = 2 x 2 x 2 x 3 x 7
Prime factors of 298 = 2 x 149
step 3 Identify the repeated and non-repeated prime factors of 168 and 298:
{2} is the most repeated factor and {2 x 2 x 3 x 7 x 149} are the non-repeated factors of 168 and 298.
step 4 Find the product of repeated and non-repeated prime factors of 168 and 298:
= 2 x 2 x 2 x 3 x 7 x 149
= 25032
lcm(168 and 298) = 25032
Hence,
lcm of 168 and 298 is 25032
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 168 and 298.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 168 and 298
What to be found:
lcm (168, 298) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
168 and 298
step 3 Choose the divisor which divides each or most of the given integers (168 and 298), 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 168 and 298 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 168 | 298 |
| 2 | 84 | 149 |
| 2 | 42 | 149 |
| 3 | 21 | 149 |
| 7 | 7 | 149 |
| 149 | 1 | 149 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 168 and 298:
= 2 x 2 x 2 x 3 x 7 x 149
= 25032
LCM(168, 298) = 25032
The LCM of two numbers 168 and 298 is 25032