Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3998 and 4006 the smallest integer that is 8007994 that is divisible by both numbers.
Least Common Multiple (LCM) of 3998 and 4006 is 8007994.
LCM(3998,4006) = 8007994
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 3998 and 4006. First we will calculate the prime factors of 3998 and 4006.
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
Prime Factorization of 4006
2 | 4006 |
2003 | 2003 |
1 |
Prime factors of 4006 are 2,2003. Prime factorization of 4006 in exponential form is:
4006 = 21×20031
Now multiplying the highest exponent prime factors to calculate the LCM of 3998 and 4006.
LCM(3998,4006) = 21×19991×20031
LCM(3998,4006) = 8007994
Factors of 3998
List of positive integer factors of 3998 that divides 3998 without a remainder.
1, 2, 1999, 3998
Factors of 4006
List of positive integer factors of 4006 that divides 4006 without a remainder.
1, 2, 2003, 4006
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3998 and 4006, than apply into the LCM equation.
GCF(3998,4006) = 2
LCM(3998,4006) = ( 3998 × 4006) / 2
LCM(3998,4006) = 16015988 / 2
LCM(3998,4006) = 8007994
(i) The LCM of 4006 and 3998 is associative
LCM of 3998 and 4006 = LCM of 4006 and 3998
1. What is the LCM of 3998 and 4006?
Answer: LCM of 3998 and 4006 is 8007994.
2. 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.
3. What are the Factors of 4006?
Answer: Factors of 4006 are 1, 2, 2003, 4006. There are 4 integers that are factors of 4006. The greatest factor of 4006 is 4006.
4. How to Find the LCM of 3998 and 4006?
Answer:
Least Common Multiple of 3998 and 4006 = 8007994
Step 1: Find the prime factorization of 3998
3998 = 2 x 1999
Step 2: Find the prime factorization of 4006
4006 = 2 x 2003
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 8007994 = 2 x 1999 x 2003
Step 4: Therefore, the least common multiple of 3998 and 4006 is 8007994.