Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1545 and 1551 the smallest integer that is 798765 that is divisible by both numbers.
Least Common Multiple (LCM) of 1545 and 1551 is 798765.
LCM(1545,1551) = 798765
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 1545 and 1551. First we will calculate the prime factors of 1545 and 1551.
Prime Factorization of 1545
3 | 1545 |
5 | 515 |
103 | 103 |
1 |
Prime factors of 1545 are 3, 5,103. Prime factorization of 1545 in exponential form is:
1545 = 31×51×1031
Prime Factorization of 1551
3 | 1551 |
11 | 517 |
47 | 47 |
1 |
Prime factors of 1551 are 3, 11,47. Prime factorization of 1551 in exponential form is:
1551 = 31×111×471
Now multiplying the highest exponent prime factors to calculate the LCM of 1545 and 1551.
LCM(1545,1551) = 31×51×111×471×1031
LCM(1545,1551) = 798765
Factors of 1545
List of positive integer factors of 1545 that divides 1545 without a remainder.
1, 3, 5, 15, 103, 309, 515, 1545
Factors of 1551
List of positive integer factors of 1551 that divides 1551 without a remainder.
1, 3, 11, 33, 47, 141, 517, 1551
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1545 and 1551, than apply into the LCM equation.
GCF(1545,1551) = 3
LCM(1545,1551) = ( 1545 × 1551) / 3
LCM(1545,1551) = 2396295 / 3
LCM(1545,1551) = 798765
(i) The LCM of 1551 and 1545 is associative
LCM of 1545 and 1551 = LCM of 1551 and 1545
1. What is the LCM of 1545 and 1551?
Answer: LCM of 1545 and 1551 is 798765.
2. What are the Factors of 1545?
Answer: Factors of 1545 are 1, 3, 5, 15, 103, 309, 515, 1545. There are 8 integers that are factors of 1545. The greatest factor of 1545 is 1545.
3. What are the Factors of 1551?
Answer: Factors of 1551 are 1, 3, 11, 33, 47, 141, 517, 1551. There are 8 integers that are factors of 1551. The greatest factor of 1551 is 1551.
4. How to Find the LCM of 1545 and 1551?
Answer:
Least Common Multiple of 1545 and 1551 = 798765
Step 1: Find the prime factorization of 1545
1545 = 3 x 5 x 103
Step 2: Find the prime factorization of 1551
1551 = 3 x 11 x 47
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 798765 = 3 x 5 x 11 x 47 x 103
Step 4: Therefore, the least common multiple of 1545 and 1551 is 798765.