Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7984 and 7989 the smallest integer that is 63784176 that is divisible by both numbers.
Least Common Multiple (LCM) of 7984 and 7989 is 63784176.
LCM(7984,7989) = 63784176
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 7984 and 7989. First we will calculate the prime factors of 7984 and 7989.
Prime Factorization of 7984
2 | 7984 |
2 | 3992 |
2 | 1996 |
2 | 998 |
499 | 499 |
1 |
Prime factors of 7984 are 2,499. Prime factorization of 7984 in exponential form is:
7984 = 24×4991
Prime Factorization of 7989
3 | 7989 |
2663 | 2663 |
1 |
Prime factors of 7989 are 3,2663. Prime factorization of 7989 in exponential form is:
7989 = 31×26631
Now multiplying the highest exponent prime factors to calculate the LCM of 7984 and 7989.
LCM(7984,7989) = 24×31×4991×26631
LCM(7984,7989) = 63784176
Factors of 7984
List of positive integer factors of 7984 that divides 7984 without a remainder.
1, 2, 4, 8, 16, 499, 998, 1996, 3992, 7984
Factors of 7989
List of positive integer factors of 7989 that divides 7989 without a remainder.
1, 3, 2663, 7989
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7984 and 7989, than apply into the LCM equation.
GCF(7984,7989) = 1
LCM(7984,7989) = ( 7984 × 7989) / 1
LCM(7984,7989) = 63784176 / 1
LCM(7984,7989) = 63784176
(i) The LCM of 7989 and 7984 is associative
LCM of 7984 and 7989 = LCM of 7989 and 7984
1. What is the LCM of 7984 and 7989?
Answer: LCM of 7984 and 7989 is 63784176.
2. What are the Factors of 7984?
Answer: Factors of 7984 are 1, 2, 4, 8, 16, 499, 998, 1996, 3992, 7984. There are 10 integers that are factors of 7984. The greatest factor of 7984 is 7984.
3. What are the Factors of 7989?
Answer: Factors of 7989 are 1, 3, 2663, 7989. There are 4 integers that are factors of 7989. The greatest factor of 7989 is 7989.
4. How to Find the LCM of 7984 and 7989?
Answer:
Least Common Multiple of 7984 and 7989 = 63784176
Step 1: Find the prime factorization of 7984
7984 = 2 x 2 x 2 x 2 x 499
Step 2: Find the prime factorization of 7989
7989 = 3 x 2663
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 63784176 = 2 x 2 x 2 x 2 x 3 x 499 x 2663
Step 4: Therefore, the least common multiple of 7984 and 7989 is 63784176.