Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7185 and 7191 the smallest integer that is 17222445 that is divisible by both numbers.
Least Common Multiple (LCM) of 7185 and 7191 is 17222445.
LCM(7185,7191) = 17222445
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 7185 and 7191. First we will calculate the prime factors of 7185 and 7191.
Prime Factorization of 7185
3 | 7185 |
5 | 2395 |
479 | 479 |
1 |
Prime factors of 7185 are 3, 5,479. Prime factorization of 7185 in exponential form is:
7185 = 31×51×4791
Prime Factorization of 7191
3 | 7191 |
3 | 2397 |
17 | 799 |
47 | 47 |
1 |
Prime factors of 7191 are 3, 17,47. Prime factorization of 7191 in exponential form is:
7191 = 32×171×471
Now multiplying the highest exponent prime factors to calculate the LCM of 7185 and 7191.
LCM(7185,7191) = 32×51×171×471×4791
LCM(7185,7191) = 17222445
Factors of 7185
List of positive integer factors of 7185 that divides 7185 without a remainder.
1, 3, 5, 15, 479, 1437, 2395, 7185
Factors of 7191
List of positive integer factors of 7191 that divides 7191 without a remainder.
1, 3, 9, 17, 47, 51, 141, 153, 423, 799, 2397, 7191
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7185 and 7191, than apply into the LCM equation.
GCF(7185,7191) = 3
LCM(7185,7191) = ( 7185 × 7191) / 3
LCM(7185,7191) = 51667335 / 3
LCM(7185,7191) = 17222445
(i) The LCM of 7191 and 7185 is associative
LCM of 7185 and 7191 = LCM of 7191 and 7185
1. What is the LCM of 7185 and 7191?
Answer: LCM of 7185 and 7191 is 17222445.
2. What are the Factors of 7185?
Answer: Factors of 7185 are 1, 3, 5, 15, 479, 1437, 2395, 7185. There are 8 integers that are factors of 7185. The greatest factor of 7185 is 7185.
3. What are the Factors of 7191?
Answer: Factors of 7191 are 1, 3, 9, 17, 47, 51, 141, 153, 423, 799, 2397, 7191. There are 12 integers that are factors of 7191. The greatest factor of 7191 is 7191.
4. How to Find the LCM of 7185 and 7191?
Answer:
Least Common Multiple of 7185 and 7191 = 17222445
Step 1: Find the prime factorization of 7185
7185 = 3 x 5 x 479
Step 2: Find the prime factorization of 7191
7191 = 3 x 3 x 17 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 = 17222445 = 3 x 3 x 5 x 17 x 47 x 479
Step 4: Therefore, the least common multiple of 7185 and 7191 is 17222445.