Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1658 and 1665 the smallest integer that is 2760570 that is divisible by both numbers.
Least Common Multiple (LCM) of 1658 and 1665 is 2760570.
LCM(1658,1665) = 2760570
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 1658 and 1665. First we will calculate the prime factors of 1658 and 1665.
Prime Factorization of 1658
2 | 1658 |
829 | 829 |
1 |
Prime factors of 1658 are 2,829. Prime factorization of 1658 in exponential form is:
1658 = 21×8291
Prime Factorization of 1665
3 | 1665 |
3 | 555 |
5 | 185 |
37 | 37 |
1 |
Prime factors of 1665 are 3, 5,37. Prime factorization of 1665 in exponential form is:
1665 = 32×51×371
Now multiplying the highest exponent prime factors to calculate the LCM of 1658 and 1665.
LCM(1658,1665) = 21×32×51×371×8291
LCM(1658,1665) = 2760570
Factors of 1658
List of positive integer factors of 1658 that divides 1658 without a remainder.
1, 2, 829, 1658
Factors of 1665
List of positive integer factors of 1665 that divides 1665 without a remainder.
1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1658 and 1665, than apply into the LCM equation.
GCF(1658,1665) = 1
LCM(1658,1665) = ( 1658 × 1665) / 1
LCM(1658,1665) = 2760570 / 1
LCM(1658,1665) = 2760570
(i) The LCM of 1665 and 1658 is associative
LCM of 1658 and 1665 = LCM of 1665 and 1658
1. What is the LCM of 1658 and 1665?
Answer: LCM of 1658 and 1665 is 2760570.
2. What are the Factors of 1658?
Answer: Factors of 1658 are 1, 2, 829, 1658. There are 4 integers that are factors of 1658. The greatest factor of 1658 is 1658.
3. What are the Factors of 1665?
Answer: Factors of 1665 are 1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665. There are 12 integers that are factors of 1665. The greatest factor of 1665 is 1665.
4. How to Find the LCM of 1658 and 1665?
Answer:
Least Common Multiple of 1658 and 1665 = 2760570
Step 1: Find the prime factorization of 1658
1658 = 2 x 829
Step 2: Find the prime factorization of 1665
1665 = 3 x 3 x 5 x 37
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2760570 = 2 x 3 x 3 x 5 x 37 x 829
Step 4: Therefore, the least common multiple of 1658 and 1665 is 2760570.