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 7988 the smallest integer that is 15944048 that is divisible by both numbers.
Least Common Multiple (LCM) of 7984 and 7988 is 15944048.
LCM(7984,7988) = 15944048
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 7988. First we will calculate the prime factors of 7984 and 7988.
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 7988
2 | 7988 |
2 | 3994 |
1997 | 1997 |
1 |
Prime factors of 7988 are 2,1997. Prime factorization of 7988 in exponential form is:
7988 = 22×19971
Now multiplying the highest exponent prime factors to calculate the LCM of 7984 and 7988.
LCM(7984,7988) = 24×4991×19971
LCM(7984,7988) = 15944048
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 7988
List of positive integer factors of 7988 that divides 7988 without a remainder.
1, 2, 4, 1997, 3994, 7988
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7984 and 7988, than apply into the LCM equation.
GCF(7984,7988) = 4
LCM(7984,7988) = ( 7984 × 7988) / 4
LCM(7984,7988) = 63776192 / 4
LCM(7984,7988) = 15944048
(i) The LCM of 7988 and 7984 is associative
LCM of 7984 and 7988 = LCM of 7988 and 7984
1. What is the LCM of 7984 and 7988?
Answer: LCM of 7984 and 7988 is 15944048.
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 7988?
Answer: Factors of 7988 are 1, 2, 4, 1997, 3994, 7988. There are 6 integers that are factors of 7988. The greatest factor of 7988 is 7988.
4. How to Find the LCM of 7984 and 7988?
Answer:
Least Common Multiple of 7984 and 7988 = 15944048
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 7988
7988 = 2 x 2 x 1997
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 15944048 = 2 x 2 x 2 x 2 x 499 x 1997
Step 4: Therefore, the least common multiple of 7984 and 7988 is 15944048.