Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7485 and 7491 the smallest integer that is 18690045 that is divisible by both numbers.
Least Common Multiple (LCM) of 7485 and 7491 is 18690045.
LCM(7485,7491) = 18690045
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 7485 and 7491. First we will calculate the prime factors of 7485 and 7491.
Prime Factorization of 7485
3 | 7485 |
5 | 2495 |
499 | 499 |
1 |
Prime factors of 7485 are 3, 5,499. Prime factorization of 7485 in exponential form is:
7485 = 31×51×4991
Prime Factorization of 7491
3 | 7491 |
11 | 2497 |
227 | 227 |
1 |
Prime factors of 7491 are 3, 11,227. Prime factorization of 7491 in exponential form is:
7491 = 31×111×2271
Now multiplying the highest exponent prime factors to calculate the LCM of 7485 and 7491.
LCM(7485,7491) = 31×51×111×2271×4991
LCM(7485,7491) = 18690045
Factors of 7485
List of positive integer factors of 7485 that divides 7485 without a remainder.
1, 3, 5, 15, 499, 1497, 2495, 7485
Factors of 7491
List of positive integer factors of 7491 that divides 7491 without a remainder.
1, 3, 11, 33, 227, 681, 2497, 7491
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7485 and 7491, than apply into the LCM equation.
GCF(7485,7491) = 3
LCM(7485,7491) = ( 7485 × 7491) / 3
LCM(7485,7491) = 56070135 / 3
LCM(7485,7491) = 18690045
(i) The LCM of 7491 and 7485 is associative
LCM of 7485 and 7491 = LCM of 7491 and 7485
1. What is the LCM of 7485 and 7491?
Answer: LCM of 7485 and 7491 is 18690045.
2. What are the Factors of 7485?
Answer: Factors of 7485 are 1, 3, 5, 15, 499, 1497, 2495, 7485. There are 8 integers that are factors of 7485. The greatest factor of 7485 is 7485.
3. What are the Factors of 7491?
Answer: Factors of 7491 are 1, 3, 11, 33, 227, 681, 2497, 7491. There are 8 integers that are factors of 7491. The greatest factor of 7491 is 7491.
4. How to Find the LCM of 7485 and 7491?
Answer:
Least Common Multiple of 7485 and 7491 = 18690045
Step 1: Find the prime factorization of 7485
7485 = 3 x 5 x 499
Step 2: Find the prime factorization of 7491
7491 = 3 x 11 x 227
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 18690045 = 3 x 5 x 11 x 227 x 499
Step 4: Therefore, the least common multiple of 7485 and 7491 is 18690045.