LCM of 140 and 157
21980 is the LCM of 140 and 157. 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 140 and 157, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 140 and 157?
lcm (140 157) = (?)
140 => 2 x 2 x 5 x 7
157 => 157
= 2 x 2 x 5 x 7 x 157
= 21980
lcm (140 and 157) = 21980
21980 is the LCM of 140 and 157.
where,
140 is a positive integer,
157 is a positive integer,
21980 is the LCM of 140 and 157,
There is no common factors of 140 and 157 in {2 x 2 x 5 x 7, 157},
{2 x 2 x 5 x 7 x 157} in {2 x 2 x 5 x 7, 157} are the uncommon factors of 140 and 157.
Use in Mathematics: LCM of 140 and 157
The below are some of the mathematical applications where lcm of 140 and 157 can be used:
- to find the least number which is exactly divisible by 140 and 157.
- to find the common denominator for two fractions having 140 and 157 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 140 and 157 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 140 seconds and bell B tolls at 157 seconds repeatedly. The answer is that all bells A and B toll together at 21980 seconds for the first time, at 43960 seconds for the second time, at 65940 seconds for the third time and so on.
Important Notes: 140 and 157 lcm
The below are the important notes to be remembered while solving the lcm of 140 and 157:
- The common prime factors and the remaining prime factors of 140 and 157 should be multiplied to find the least common multiple of 140 and 157, when solving lcm by using prime factors method.
- The results of lcm of 140 and 157, and the lcm of 157 and 140 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 140 and 157?
The below solved example with step by step work shows how to find what is the lcm of 140 and 157 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 140 and 157?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 140
B = 157
What to be found:
find the lcm of 140 and 157
step 2 Find the prime factors of 140 and 157:
Prime factors of 140 = 2 x 2 x 5 x 7
Prime factors of 157 = 157
step 3Identify the repeated and non-repeated prime factors of 140 and 157:
Since there is no common factors between 140 and 157, multiplying the given numbers directly provides the LCM of
140 and 157.
= 140 x 157
= 21980
lcm(140 and 157) = 21980
Hence,
lcm of 140 and 157 is 21980
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 140 and 157.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 140 and 157
What to be found:
lcm (140, 157) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
140 and 157
step 3 Choose the divisor which divides each or most of the given integers (140 and 157), 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 140 and 157 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 140 | 157 |
| 2 | 70 | 157 |
| 5 | 35 | 157 |
| 7 | 7 | 157 |
| 157 | 1 | 157 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 140 and 157:
= 2 x 2 x 5 x 7 x 157
= 21980
LCM(140, 157) = 21980
The LCM of two numbers 140 and 157 is 21980