Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 9978 and 9985 the smallest integer that is 99630330 that is divisible by both numbers.
Least Common Multiple (LCM) of 9978 and 9985 is 99630330.
LCM(9978,9985) = 99630330
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 9978 and 9985. First we will calculate the prime factors of 9978 and 9985.
Prime Factorization of 9978
2 | 9978 |
3 | 4989 |
1663 | 1663 |
1 |
Prime factors of 9978 are 2, 3,1663. Prime factorization of 9978 in exponential form is:
9978 = 21×31×16631
Prime Factorization of 9985
5 | 9985 |
1997 | 1997 |
1 |
Prime factors of 9985 are 5,1997. Prime factorization of 9985 in exponential form is:
9985 = 51×19971
Now multiplying the highest exponent prime factors to calculate the LCM of 9978 and 9985.
LCM(9978,9985) = 21×31×51×16631×19971
LCM(9978,9985) = 99630330
Factors of 9978
List of positive integer factors of 9978 that divides 9978 without a remainder.
1, 2, 3, 6, 1663, 3326, 4989, 9978
Factors of 9985
List of positive integer factors of 9985 that divides 9985 without a remainder.
1, 5, 1997, 9985
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9978 and 9985, than apply into the LCM equation.
GCF(9978,9985) = 1
LCM(9978,9985) = ( 9978 × 9985) / 1
LCM(9978,9985) = 99630330 / 1
LCM(9978,9985) = 99630330
(i) The LCM of 9985 and 9978 is associative
LCM of 9978 and 9985 = LCM of 9985 and 9978
1. What is the LCM of 9978 and 9985?
Answer: LCM of 9978 and 9985 is 99630330.
2. What are the Factors of 9978?
Answer: Factors of 9978 are 1, 2, 3, 6, 1663, 3326, 4989, 9978. There are 8 integers that are factors of 9978. The greatest factor of 9978 is 9978.
3. What are the Factors of 9985?
Answer: Factors of 9985 are 1, 5, 1997, 9985. There are 4 integers that are factors of 9985. The greatest factor of 9985 is 9985.
4. How to Find the LCM of 9978 and 9985?
Answer:
Least Common Multiple of 9978 and 9985 = 99630330
Step 1: Find the prime factorization of 9978
9978 = 2 x 3 x 1663
Step 2: Find the prime factorization of 9985
9985 = 5 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 = 99630330 = 2 x 3 x 5 x 1663 x 1997
Step 4: Therefore, the least common multiple of 9978 and 9985 is 99630330.