Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3992 and 3998 the smallest integer that is 7980008 that is divisible by both numbers.
Least Common Multiple (LCM) of 3992 and 3998 is 7980008.
LCM(3992,3998) = 7980008
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 3992 and 3998. First we will calculate the prime factors of 3992 and 3998.
Prime Factorization of 3992
2 | 3992 |
2 | 1996 |
2 | 998 |
499 | 499 |
1 |
Prime factors of 3992 are 2,499. Prime factorization of 3992 in exponential form is:
3992 = 23×4991
Prime Factorization of 3998
2 | 3998 |
1999 | 1999 |
1 |
Prime factors of 3998 are 2,1999. Prime factorization of 3998 in exponential form is:
3998 = 21×19991
Now multiplying the highest exponent prime factors to calculate the LCM of 3992 and 3998.
LCM(3992,3998) = 23×4991×19991
LCM(3992,3998) = 7980008
Factors of 3992
List of positive integer factors of 3992 that divides 3992 without a remainder.
1, 2, 4, 8, 499, 998, 1996, 3992
Factors of 3998
List of positive integer factors of 3998 that divides 3998 without a remainder.
1, 2, 1999, 3998
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3992 and 3998, than apply into the LCM equation.
GCF(3992,3998) = 2
LCM(3992,3998) = ( 3992 × 3998) / 2
LCM(3992,3998) = 15960016 / 2
LCM(3992,3998) = 7980008
(i) The LCM of 3998 and 3992 is associative
LCM of 3992 and 3998 = LCM of 3998 and 3992
1. What is the LCM of 3992 and 3998?
Answer: LCM of 3992 and 3998 is 7980008.
2. What are the Factors of 3992?
Answer: Factors of 3992 are 1, 2, 4, 8, 499, 998, 1996, 3992. There are 8 integers that are factors of 3992. The greatest factor of 3992 is 3992.
3. What are the Factors of 3998?
Answer: Factors of 3998 are 1, 2, 1999, 3998. There are 4 integers that are factors of 3998. The greatest factor of 3998 is 3998.
4. How to Find the LCM of 3992 and 3998?
Answer:
Least Common Multiple of 3992 and 3998 = 7980008
Step 1: Find the prime factorization of 3992
3992 = 2 x 2 x 2 x 499
Step 2: Find the prime factorization of 3998
3998 = 2 x 1999
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 7980008 = 2 x 2 x 2 x 499 x 1999
Step 4: Therefore, the least common multiple of 3992 and 3998 is 7980008.