LCM of 158 and 280
22120 is the LCM of 158 and 280. 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 158 and 280, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 158 and 280?
lcm (158 280) = (?)
158 => 2 x 79
280 => 2 x 2 x 2 x 5 x 7
= 2 x 79 x 2 x 2 x 5 x 7
= 22120
lcm (158 and 280) = 22120
22120 is the LCM of 158 and 280.
where,
158 is a positive integer,
280 is a positive integer,
22120 is the LCM of 158 and 280,
{2} in {2 x 79, 2 x 2 x 2 x 5 x 7} is the common factors of 158 and 280,
{79 x 2 x 2 x 5 x 7} in {2 x 79, 2 x 2 x 2 x 5 x 7} are the uncommon factors of 158 and 280.
Use in Mathematics: LCM of 158 and 280
The below are some of the mathematical applications where lcm of 158 and 280 can be used:
- to find the least number which is exactly divisible by 158 and 280.
- to find the common denominator for two fractions having 158 and 280 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 158 and 280 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 158 seconds and bell B tolls at 280 seconds repeatedly. The answer is that all bells A and B toll together at 22120 seconds for the first time, at 44240 seconds for the second time, at 66360 seconds for the third time and so on.
Important Notes: 158 and 280 lcm
The below are the important notes to be remembered while solving the lcm of 158 and 280:
- The common prime factors and the remaining prime factors of 158 and 280 should be multiplied to find the least common multiple of 158 and 280, when solving lcm by using prime factors method.
- The results of lcm of 158 and 280, and the lcm of 280 and 158 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 158 and 280?
The below solved example with step by step work shows how to find what is the lcm of 158 and 280 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 158 and 280?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 158
B = 280
What to be found:
find the lcm of 158 and 280
step 2 Find the prime factors of 158 and 280:
Prime factors of 158 = 2 x 79
Prime factors of 280 = 2 x 2 x 2 x 5 x 7
step 3 Identify the repeated and non-repeated prime factors of 158 and 280:
{2} is the most repeated factor and {79 x 2 x 2 x 5 x 7} are the non-repeated factors of 158 and 280.
step 4 Find the product of repeated and non-repeated prime factors of 158 and 280:
= 2 x 79 x 2 x 2 x 5 x 7
= 22120
lcm(158 and 280) = 22120
Hence,
lcm of 158 and 280 is 22120
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 158 and 280.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 158 and 280
What to be found:
lcm (158, 280) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
158 and 280
step 3 Choose the divisor which divides each or most of the given integers (158 and 280), 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 158 and 280 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 158 | 280 |
| 2 | 79 | 140 |
| 2 | 79 | 70 |
| 5 | 79 | 35 |
| 7 | 79 | 7 |
| 79 | 79 | 1 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 158 and 280:
= 2 x 2 x 2 x 5 x 7 x 79
= 22120
LCM(158, 280) = 22120
The LCM of two numbers 158 and 280 is 22120