Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 81723 and 81729 the smallest integer that is 2226379689 that is divisible by both numbers.
Least Common Multiple (LCM) of 81723 and 81729 is 2226379689.
LCM(81723,81729) = 2226379689
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 81723 and 81729. First we will calculate the prime factors of 81723 and 81729.
Prime Factorization of 81723
3 | 81723 |
27241 | 27241 |
1 |
Prime factors of 81723 are 3,27241. Prime factorization of 81723 in exponential form is:
81723 = 31×272411
Prime Factorization of 81729
3 | 81729 |
3 | 27243 |
3 | 9081 |
3 | 3027 |
1009 | 1009 |
1 |
Prime factors of 81729 are 3,1009. Prime factorization of 81729 in exponential form is:
81729 = 34×10091
Now multiplying the highest exponent prime factors to calculate the LCM of 81723 and 81729.
LCM(81723,81729) = 34×10091×272411
LCM(81723,81729) = 2226379689
Factors of 81723
List of positive integer factors of 81723 that divides 81723 without a remainder.
1, 3, 27241, 81723
Factors of 81729
List of positive integer factors of 81729 that divides 81729 without a remainder.
1, 3, 9, 27, 81, 1009, 3027, 9081, 27243, 81729
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81723 and 81729, than apply into the LCM equation.
GCF(81723,81729) = 3
LCM(81723,81729) = ( 81723 × 81729) / 3
LCM(81723,81729) = 6679139067 / 3
LCM(81723,81729) = 2226379689
(i) The LCM of 81729 and 81723 is associative
LCM of 81723 and 81729 = LCM of 81729 and 81723
1. What is the LCM of 81723 and 81729?
Answer: LCM of 81723 and 81729 is 2226379689.
2. What are the Factors of 81723?
Answer: Factors of 81723 are 1, 3, 27241, 81723. There are 4 integers that are factors of 81723. The greatest factor of 81723 is 81723.
3. What are the Factors of 81729?
Answer: Factors of 81729 are 1, 3, 9, 27, 81, 1009, 3027, 9081, 27243, 81729. There are 10 integers that are factors of 81729. The greatest factor of 81729 is 81729.
4. How to Find the LCM of 81723 and 81729?
Answer:
Least Common Multiple of 81723 and 81729 = 2226379689
Step 1: Find the prime factorization of 81723
81723 = 3 x 27241
Step 2: Find the prime factorization of 81729
81729 = 3 x 3 x 3 x 3 x 1009
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2226379689 = 3 x 3 x 3 x 3 x 1009 x 27241
Step 4: Therefore, the least common multiple of 81723 and 81729 is 2226379689.