Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 991 and 993 the smallest integer that is 984063 that is divisible by both numbers.
Least Common Multiple (LCM) of 991 and 993 is 984063.
LCM(991,993) = 984063
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 991 and 993. First we will calculate the prime factors of 991 and 993.
Prime Factorization of 991
991 | 991 |
1 |
Prime factors of 991 are 991. Prime factorization of 991 in exponential form is:
991 = 9911
Prime Factorization of 993
3 | 993 |
331 | 331 |
1 |
Prime factors of 993 are 3,331. Prime factorization of 993 in exponential form is:
993 = 31×3311
Now multiplying the highest exponent prime factors to calculate the LCM of 991 and 993.
LCM(991,993) = 31×3311×9911
LCM(991,993) = 984063
Factors of 991
List of positive integer factors of 991 that divides 991 without a remainder.
1, 991
Factors of 993
List of positive integer factors of 993 that divides 993 without a remainder.
1, 3, 331, 993
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 991 and 993, than apply into the LCM equation.
GCF(991,993) = 1
LCM(991,993) = ( 991 × 993) / 1
LCM(991,993) = 984063 / 1
LCM(991,993) = 984063
(i) The LCM of 993 and 991 is associative
LCM of 991 and 993 = LCM of 993 and 991
1. What is the LCM of 991 and 993?
Answer: LCM of 991 and 993 is 984063.
2. What are the Factors of 991?
Answer: Factors of 991 are 1, 991. There are 2 integers that are factors of 991. The greatest factor of 991 is 991.
3. What are the Factors of 993?
Answer: Factors of 993 are 1, 3, 331, 993. There are 4 integers that are factors of 993. The greatest factor of 993 is 993.
4. How to Find the LCM of 991 and 993?
Answer:
Least Common Multiple of 991 and 993 = 984063
Step 1: Find the prime factorization of 991
991 = 991
Step 2: Find the prime factorization of 993
993 = 3 x 331
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 984063 = 3 x 331 x 991
Step 4: Therefore, the least common multiple of 991 and 993 is 984063.