LCM of 161 and 322
322 is the LCM of 161 and 322. 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 161 and 322, provided along with the use cases of mathematics and real-world problems.
what is the lcm of 161 and 322?
lcm (161 322) = (?)
161 => 7 x 23
322 => 2 x 7 x 23
= 7 x 23 x 2
= 322
lcm (161 and 322) = 322
322 is the LCM of 161 and 322.
where,
161 is a positive integer,
322 is a positive integer,
322 is the LCM of 161 and 322,
{7 x 23} in {7 x 23, 2 x 7 x 23} are the common factors of 161 and 322,
{2} in {7 x 23, 2 x 7 x 23} is the uncommon factors of 161 and 322.
Use in Mathematics: LCM of 161 and 322
The below are some of the mathematical applications where lcm of 161 and 322 can be used:
- to find the least number which is exactly divisible by 161 and 322.
- to find the common denominator for two fractions having 161 and 322 as denominators in the unlike fractions addition or subtraction.
In the context of lcm real world problems, the lcm of 161 and 322 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 161 seconds and bell B tolls at 322 seconds repeatedly. The answer is that all bells A and B toll together at 322 seconds for the first time, at 644 seconds for the second time, at 966 seconds for the third time and so on.
Important Notes: 161 and 322 lcm
The below are the important notes to be remembered while solving the lcm of 161 and 322:
- The common prime factors and the remaining prime factors of 161 and 322 should be multiplied to find the least common multiple of 161 and 322, when solving lcm by using prime factors method.
- The results of lcm of 161 and 322, and the lcm of 322 and 161 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 161 and 322?
The below solved example with step by step work shows how to find what is the lcm of 161 and 322 by using prime factors method and division method.
Solved example using prime factors method:
What is the LCM of 161 and 322?
step 1
Address the input parameters, values and observe what to be found:
Input parameters and values:
A = 161
B = 322
What to be found:
find the lcm of 161 and 322
step 2 Find the prime factors of 161 and 322:
Prime factors of 161 = 7 x 23
Prime factors of 322 = 2 x 7 x 23
step 3 Identify the repeated and non-repeated prime factors of 161 and 322:
{7, 23} are the most repeated factors and {2} is the non-repeated factor of 161 and 322.
step 4 Find the product of repeated and non-repeated prime factors of 161 and 322:
= 7 x 23 x 2
= 322
lcm(161 and 322) = 322
Hence,
lcm of 161 and 322 is 322
This special division method is one of the easiest ways to understand the entire calculation to find the LCM of 161 and 322.
step 1 Address the input parameters, values and observe what to be found:
Input parameters and values:
Integers: 161 and 322
What to be found:
lcm (161, 322) = ?
step 2 Arrange the given integers in the horizontal form with space or comma separated format:
161 and 322
step 3 Choose the divisor which divides each or most of the given integers (161 and 322), 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 161 and 322 is not divisible by the selected divisor; repeat the same process until all the integers are brought to 1 as like below:
| 2 | 161 | 322 |
| 7 | 161 | 161 |
| 23 | 23 | 23 |
| 1 | 1 |
step 4 Multiply the divisors to find the lcm of 161 and 322:
= 2 x 7 x 23
= 322
LCM(161, 322) = 322
The LCM of two numbers 161 and 322 is 322