LCM of 251 and 290
72790 is the LCM of 251 and 290. 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 251 and 290, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 251 and 290?
lcm (251 290) = (?)
251 => 251
290 => 2 x 5 x 29
= 251 x 2 x 5 x 29
= 72790
lcm (251 and 290) = 72790
72790 is the LCM of 251 and 290.
where,
251 is a positive integer,
290 is a positive integer,
72790 is the LCM of 251 and 290,
There is no common factors of 251 and 290 in {251, 2 x 5 x 29},
{251 x 2 x 5 x 29} in {251, 2 x 5 x 29} are the uncommon factors of 251 and 290.
Use in Mathematics: LCM of 251 and 290
The below are some of the mathematical applications where lcm of 251 and 290 can be used:
- to find the least number which is exactly divisible by 251 and 290.
- to find the common denominator for two fractions having 251 and 290 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 251 and 290 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 251 seconds and bell B tolls at 290 seconds repeatedly. The answer is that all bells A and B toll together at 72790 seconds for the first time, at 145580 seconds for the second time, at 218370 seconds for the third time and so on.
Important Notes: 251 and 290 lcm
The below are the important notes to be remembered while solving the lcm of 251 and 290:
- The common prime factors and the remaining prime factors of 251 and 290 should be multiplied to find the least common multiple of 251 and 290, when solving lcm by using prime factors method.
- The results of lcm of 251 and 290, and the lcm of 290 and 251 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 251 and 290?
The below solved example with step by step work shows how to find what is the lcm of 251 and 290 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 251 and 290?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 251
B = 290
What to be found:
find the lcm of 251 and 290
step 2 Find the prime factors of 251 and 290:
Prime factors of 251 = 251
Prime factors of 290 = 2 x 5 x 29
step 3Identify the repeated and non-repeated prime factors of 251 and 290:
Since there is no common factors between 251 and 290, multiplying the given numbers directly provides the LCM of
251 and 290.
= 251 x 290
= 72790
lcm(251 and 290) = 72790
Hence,
lcm of 251 and 290 is 72790
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 251 and 290.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 251 and 290
What to be found:
lcm (251, 290) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
251 and 290
step 3 Choose the divisor which divides each or most of the given integers (251 and 290), 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 251 and 290 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 251 | 290 |
| 5 | 251 | 145 |
| 29 | 251 | 29 |
| 251 | 251 | 1 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 251 and 290:
= 2 x 5 x 29 x 251
= 72790
LCM(251, 290) = 72790
The LCM of two numbers 251 and 290 is 72790