LCM of 257 and 290
74530 is the LCM of 257 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 257 and 290, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 257 and 290?
lcm (257 290) = (?)
257 => 257
290 => 2 x 5 x 29
= 257 x 2 x 5 x 29
= 74530
lcm (257 and 290) = 74530
74530 is the LCM of 257 and 290.
where,
257 is a positive integer,
290 is a positive integer,
74530 is the LCM of 257 and 290,
There is no common factors of 257 and 290 in {257, 2 x 5 x 29},
{257 x 2 x 5 x 29} in {257, 2 x 5 x 29} are the uncommon factors of 257 and 290.
Use in Mathematics: LCM of 257 and 290
The below are some of the mathematical applications where lcm of 257 and 290 can be used:
- to find the least number which is exactly divisible by 257 and 290.
- to find the common denominator for two fractions having 257 and 290 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 257 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 257 seconds and bell B tolls at 290 seconds repeatedly. The answer is that all bells A and B toll together at 74530 seconds for the first time, at 149060 seconds for the second time, at 223590 seconds for the third time and so on.
Important Notes: 257 and 290 lcm
The below are the important notes to be remembered while solving the lcm of 257 and 290:
- The common prime factors and the remaining prime factors of 257 and 290 should be multiplied to find the least common multiple of 257 and 290, when solving lcm by using prime factors method.
- The results of lcm of 257 and 290, and the lcm of 290 and 257 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 257 and 290?
The below solved example with step by step work shows how to find what is the lcm of 257 and 290 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 257 and 290?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 257
B = 290
What to be found:
find the lcm of 257 and 290
step 2 Find the prime factors of 257 and 290:
Prime factors of 257 = 257
Prime factors of 290 = 2 x 5 x 29
step 3Identify the repeated and non-repeated prime factors of 257 and 290:
Since there is no common factors between 257 and 290, multiplying the given numbers directly provides the LCM of
257 and 290.
= 257 x 290
= 74530
lcm(257 and 290) = 74530
Hence,
lcm of 257 and 290 is 74530
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 257 and 290.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 257 and 290
What to be found:
lcm (257, 290) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
257 and 290
step 3 Choose the divisor which divides each or most of the given integers (257 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 257 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 | 257 | 290 |
| 5 | 257 | 145 |
| 29 | 257 | 29 |
| 257 | 257 | 1 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 257 and 290:
= 2 x 5 x 29 x 257
= 74530
LCM(257, 290) = 74530
The LCM of two numbers 257 and 290 is 74530