Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1539 and 1545 the smallest integer that is 792585 that is divisible by both numbers.
Least Common Multiple (LCM) of 1539 and 1545 is 792585.
LCM(1539,1545) = 792585
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 1539 and 1545. First we will calculate the prime factors of 1539 and 1545.
Prime Factorization of 1539
3 | 1539 |
3 | 513 |
3 | 171 |
3 | 57 |
19 | 19 |
1 |
Prime factors of 1539 are 3,19. Prime factorization of 1539 in exponential form is:
1539 = 34×191
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
Now multiplying the highest exponent prime factors to calculate the LCM of 1539 and 1545.
LCM(1539,1545) = 34×51×191×1031
LCM(1539,1545) = 792585
Factors of 1539
List of positive integer factors of 1539 that divides 1539 without a remainder.
1, 3, 9, 19, 27, 57, 81, 171, 513, 1539
Factors of 1545
List of positive integer factors of 1545 that divides 1545 without a remainder.
1, 3, 5, 15, 103, 309, 515, 1545
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1539 and 1545, than apply into the LCM equation.
GCF(1539,1545) = 3
LCM(1539,1545) = ( 1539 × 1545) / 3
LCM(1539,1545) = 2377755 / 3
LCM(1539,1545) = 792585
(i) The LCM of 1545 and 1539 is associative
LCM of 1539 and 1545 = LCM of 1545 and 1539
1. What is the LCM of 1539 and 1545?
Answer: LCM of 1539 and 1545 is 792585.
2. What are the Factors of 1539?
Answer: Factors of 1539 are 1, 3, 9, 19, 27, 57, 81, 171, 513, 1539. There are 10 integers that are factors of 1539. The greatest factor of 1539 is 1539.
3. 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.
4. How to Find the LCM of 1539 and 1545?
Answer:
Least Common Multiple of 1539 and 1545 = 792585
Step 1: Find the prime factorization of 1539
1539 = 3 x 3 x 3 x 3 x 19
Step 2: Find the prime factorization of 1545
1545 = 3 x 5 x 103
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 792585 = 3 x 3 x 3 x 3 x 5 x 19 x 103
Step 4: Therefore, the least common multiple of 1539 and 1545 is 792585.