LCM of 215 and 308
66220 is the LCM of 215 and 308. 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 215 and 308, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 215 and 308?
lcm (215 308) = (?)
215 => 5 x 43
308 => 2 x 2 x 7 x 11
= 5 x 43 x 2 x 2 x 7 x 11
= 66220
lcm (215 and 308) = 66220
66220 is the LCM of 215 and 308.
where,
215 is a positive integer,
308 is a positive integer,
66220 is the LCM of 215 and 308,
There is no common factors of 215 and 308 in {5 x 43, 2 x 2 x 7 x 11},
{5 x 43 x 2 x 2 x 7 x 11} in {5 x 43, 2 x 2 x 7 x 11} are the uncommon factors of 215 and 308.
Use in Mathematics: LCM of 215 and 308
The below are some of the mathematical applications where lcm of 215 and 308 can be used:
- to find the least number which is exactly divisible by 215 and 308.
- to find the common denominator for two fractions having 215 and 308 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 215 and 308 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 215 seconds and bell B tolls at 308 seconds repeatedly. The answer is that all bells A and B toll together at 66220 seconds for the first time, at 132440 seconds for the second time, at 198660 seconds for the third time and so on.
Important Notes: 215 and 308 lcm
The below are the important notes to be remembered while solving the lcm of 215 and 308:
- The common prime factors and the remaining prime factors of 215 and 308 should be multiplied to find the least common multiple of 215 and 308, when solving lcm by using prime factors method.
- The results of lcm of 215 and 308, and the lcm of 308 and 215 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 215 and 308?
The below solved example with step by step work shows how to find what is the lcm of 215 and 308 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 215 and 308?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 215
B = 308
What to be found:
find the lcm of 215 and 308
step 2 Find the prime factors of 215 and 308:
Prime factors of 215 = 5 x 43
Prime factors of 308 = 2 x 2 x 7 x 11
step 3Identify the repeated and non-repeated prime factors of 215 and 308:
Since there is no common factors between 215 and 308, multiplying the given numbers directly provides the LCM of
215 and 308.
= 215 x 308
= 66220
lcm(215 and 308) = 66220
Hence,
lcm of 215 and 308 is 66220
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 215 and 308.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 215 and 308
What to be found:
lcm (215, 308) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
215 and 308
step 3 Choose the divisor which divides each or most of the given integers (215 and 308), 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 215 and 308 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 215 | 308 |
| 2 | 215 | 154 |
| 5 | 215 | 77 |
| 7 | 43 | 77 |
| 11 | 43 | 11 |
| 43 | 43 | 1 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 215 and 308:
= 2 x 2 x 5 x 7 x 11 x 43
= 66220
LCM(215, 308) = 66220
The LCM of two numbers 215 and 308 is 66220