LCM of 105 and 207
7245 is the LCM of 105 and 207. 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 105 and 207, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 105 and 207?
lcm (105 207) = (?)
105 => 3 x 5 x 7
207 => 3 x 3 x 23
= 3 x 5 x 7 x 3 x 23
= 7245
lcm (105 and 207) = 7245
7245 is the LCM of 105 and 207.
where,
105 is a positive integer,
207 is a positive integer,
7245 is the LCM of 105 and 207,
{3} in {3 x 5 x 7, 3 x 3 x 23} is the common factors of 105 and 207,
{5 x 7 x 3 x 23} in {3 x 5 x 7, 3 x 3 x 23} are the uncommon factors of 105 and 207.
Use in Mathematics: LCM of 105 and 207
The below are some of the mathematical applications where lcm of 105 and 207 can be used:
- to find the least number which is exactly divisible by 105 and 207.
- to find the common denominator for two fractions having 105 and 207 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 105 and 207 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 105 seconds and bell B tolls at 207 seconds repeatedly. The answer is that all bells A and B toll together at 7245 seconds for the first time, at 14490 seconds for the second time, at 21735 seconds for the third time and so on.
Important Notes: 105 and 207 lcm
The below are the important notes to be remembered while solving the lcm of 105 and 207:
- The common prime factors and the remaining prime factors of 105 and 207 should be multiplied to find the least common multiple of 105 and 207, when solving lcm by using prime factors method.
- The results of lcm of 105 and 207, and the lcm of 207 and 105 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 105 and 207?
The below solved example with step by step work shows how to find what is the lcm of 105 and 207 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 105 and 207?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 105
B = 207
What to be found:
find the lcm of 105 and 207
step 2 Find the prime factors of 105 and 207:
Prime factors of 105 = 3 x 5 x 7
Prime factors of 207 = 3 x 3 x 23
step 3 Identify the repeated and non-repeated prime factors of 105 and 207:
{3} is the most repeated factor and {5 x 7 x 3 x 23} are the non-repeated factors of 105 and 207.
step 4 Find the product of repeated and non-repeated prime factors of 105 and 207:
= 3 x 5 x 7 x 3 x 23
= 7245
lcm(105 and 207) = 7245
Hence,
lcm of 105 and 207 is 7245
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 105 and 207.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 105 and 207
What to be found:
lcm (105, 207) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
105 and 207
step 3 Choose the divisor which divides each or most of the given integers (105 and 207), 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 105 and 207 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 3 | 105 | 207 |
| 3 | 35 | 69 |
| 5 | 35 | 23 |
| 7 | 7 | 23 |
| 23 | 1 | 23 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 105 and 207:
= 3 x 3 x 5 x 7 x 23
= 7245
LCM(105, 207) = 7245
The LCM of two numbers 105 and 207 is 7245