Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1485 and 1491 the smallest integer that is 738045 that is divisible by both numbers.
Least Common Multiple (LCM) of 1485 and 1491 is 738045.
LCM(1485,1491) = 738045
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 1485 and 1491. First we will calculate the prime factors of 1485 and 1491.
Prime Factorization of 1485
3 | 1485 |
3 | 495 |
3 | 165 |
5 | 55 |
11 | 11 |
1 |
Prime factors of 1485 are 3, 5,11. Prime factorization of 1485 in exponential form is:
1485 = 33×51×111
Prime Factorization of 1491
3 | 1491 |
7 | 497 |
71 | 71 |
1 |
Prime factors of 1491 are 3, 7,71. Prime factorization of 1491 in exponential form is:
1491 = 31×71×711
Now multiplying the highest exponent prime factors to calculate the LCM of 1485 and 1491.
LCM(1485,1491) = 33×51×71×111×711
LCM(1485,1491) = 738045
Factors of 1485
List of positive integer factors of 1485 that divides 1485 without a remainder.
1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 135, 165, 297, 495, 1485
Factors of 1491
List of positive integer factors of 1491 that divides 1491 without a remainder.
1, 3, 7, 21, 71, 213, 497, 1491
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1485 and 1491, than apply into the LCM equation.
GCF(1485,1491) = 3
LCM(1485,1491) = ( 1485 × 1491) / 3
LCM(1485,1491) = 2214135 / 3
LCM(1485,1491) = 738045
(i) The LCM of 1491 and 1485 is associative
LCM of 1485 and 1491 = LCM of 1491 and 1485
1. What is the LCM of 1485 and 1491?
Answer: LCM of 1485 and 1491 is 738045.
2. What are the Factors of 1485?
Answer: Factors of 1485 are 1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 135, 165, 297, 495, 1485. There are 16 integers that are factors of 1485. The greatest factor of 1485 is 1485.
3. What are the Factors of 1491?
Answer: Factors of 1491 are 1, 3, 7, 21, 71, 213, 497, 1491. There are 8 integers that are factors of 1491. The greatest factor of 1491 is 1491.
4. How to Find the LCM of 1485 and 1491?
Answer:
Least Common Multiple of 1485 and 1491 = 738045
Step 1: Find the prime factorization of 1485
1485 = 3 x 3 x 3 x 5 x 11
Step 2: Find the prime factorization of 1491
1491 = 3 x 7 x 71
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 738045 = 3 x 3 x 3 x 5 x 7 x 11 x 71
Step 4: Therefore, the least common multiple of 1485 and 1491 is 738045.