LCM of 338 and 340
57460 is the LCM of 338 and 340. 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 338 and 340, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 338 and 340?
lcm (338 340) = (?)
338 => 2 x 13 x 13
340 => 2 x 2 x 5 x 17
= 2 x 13 x 13 x 2 x 5 x 17
= 57460
lcm (338 and 340) = 57460
57460 is the LCM of 338 and 340.
where,
338 is a positive integer,
340 is a positive integer,
57460 is the LCM of 338 and 340,
{2} in {2 x 13 x 13, 2 x 2 x 5 x 17} is the common factors of 338 and 340,
{13 x 13 x 2 x 5 x 17} in {2 x 13 x 13, 2 x 2 x 5 x 17} are the uncommon factors of 338 and 340.
Use in Mathematics: LCM of 338 and 340
The below are some of the mathematical applications where lcm of 338 and 340 can be used:
- to find the least number which is exactly divisible by 338 and 340.
- to find the common denominator for two fractions having 338 and 340 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 338 and 340 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 338 seconds and bell B tolls at 340 seconds repeatedly. The answer is that all bells A and B toll together at 57460 seconds for the first time, at 114920 seconds for the second time, at 172380 seconds for the third time and so on.
Important Notes: 338 and 340 lcm
The below are the important notes to be remembered while solving the lcm of 338 and 340:
- The common prime factors and the remaining prime factors of 338 and 340 should be multiplied to find the least common multiple of 338 and 340, when solving lcm by using prime factors method.
- The results of lcm of 338 and 340, and the lcm of 340 and 338 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 338 and 340?
The below solved example with step by step work shows how to find what is the lcm of 338 and 340 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 338 and 340?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 338
B = 340
What to be found:
find the lcm of 338 and 340
step 2 Find the prime factors of 338 and 340:
Prime factors of 338 = 2 x 13 x 13
Prime factors of 340 = 2 x 2 x 5 x 17
step 3 Identify the repeated and non-repeated prime factors of 338 and 340:
{2} is the most repeated factor and {13 x 13 x 2 x 5 x 17} are the non-repeated factors of 338 and 340.
step 4 Find the product of repeated and non-repeated prime factors of 338 and 340:
= 2 x 13 x 13 x 2 x 5 x 17
= 57460
lcm(338 and 340) = 57460
Hence,
lcm of 338 and 340 is 57460
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 338 and 340.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 338 and 340
What to be found:
lcm (338, 340) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
338 and 340
step 3 Choose the divisor which divides each or most of the given integers (338 and 340), 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 338 and 340 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 338 | 340 |
| 2 | 169 | 170 |
| 5 | 169 | 85 |
| 13 | 169 | 17 |
| 13 | 13 | 17 |
| 17 | 1 | 17 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 338 and 340:
= 2 x 2 x 5 x 13 x 13 x 17
= 57460
LCM(338, 340) = 57460
The LCM of two numbers 338 and 340 is 57460