Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1643 and 1650 the smallest integer that is 2710950 that is divisible by both numbers.
Least Common Multiple (LCM) of 1643 and 1650 is 2710950.
LCM(1643,1650) = 2710950
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 1643 and 1650. First we will calculate the prime factors of 1643 and 1650.
Prime Factorization of 1643
31 | 1643 |
53 | 53 |
1 |
Prime factors of 1643 are 31,53. Prime factorization of 1643 in exponential form is:
1643 = 311×531
Prime Factorization of 1650
2 | 1650 |
3 | 825 |
5 | 275 |
5 | 55 |
11 | 11 |
1 |
Prime factors of 1650 are 2, 3, 5,11. Prime factorization of 1650 in exponential form is:
1650 = 21×31×52×111
Now multiplying the highest exponent prime factors to calculate the LCM of 1643 and 1650.
LCM(1643,1650) = 21×31×52×111×311×531
LCM(1643,1650) = 2710950
Factors of 1643
List of positive integer factors of 1643 that divides 1643 without a remainder.
1, 31, 53, 1643
Factors of 1650
List of positive integer factors of 1650 that divides 1650 without a remainder.
1, 2, 3, 5, 6, 10, 11, 15, 22, 25, 30, 33, 50, 55, 66, 75, 110, 150, 165, 275, 330, 550, 825, 1650
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1643 and 1650, than apply into the LCM equation.
GCF(1643,1650) = 1
LCM(1643,1650) = ( 1643 × 1650) / 1
LCM(1643,1650) = 2710950 / 1
LCM(1643,1650) = 2710950
(i) The LCM of 1650 and 1643 is associative
LCM of 1643 and 1650 = LCM of 1650 and 1643
1. What is the LCM of 1643 and 1650?
Answer: LCM of 1643 and 1650 is 2710950.
2. What are the Factors of 1643?
Answer: Factors of 1643 are 1, 31, 53, 1643. There are 4 integers that are factors of 1643. The greatest factor of 1643 is 1643.
3. What are the Factors of 1650?
Answer: Factors of 1650 are 1, 2, 3, 5, 6, 10, 11, 15, 22, 25, 30, 33, 50, 55, 66, 75, 110, 150, 165, 275, 330, 550, 825, 1650. There are 24 integers that are factors of 1650. The greatest factor of 1650 is 1650.
4. How to Find the LCM of 1643 and 1650?
Answer:
Least Common Multiple of 1643 and 1650 = 2710950
Step 1: Find the prime factorization of 1643
1643 = 31 x 53
Step 2: Find the prime factorization of 1650
1650 = 2 x 3 x 5 x 5 x 11
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2710950 = 2 x 3 x 5 x 5 x 11 x 31 x 53
Step 4: Therefore, the least common multiple of 1643 and 1650 is 2710950.