Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 985 and 991 the smallest integer that is 976135 that is divisible by both numbers.
Least Common Multiple (LCM) of 985 and 991 is 976135.
LCM(985,991) = 976135
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 985 and 991. First we will calculate the prime factors of 985 and 991.
Prime Factorization of 985
5 | 985 |
197 | 197 |
1 |
Prime factors of 985 are 5,197. Prime factorization of 985 in exponential form is:
985 = 51×1971
Prime Factorization of 991
991 | 991 |
1 |
Prime factors of 991 are 991. Prime factorization of 991 in exponential form is:
991 = 9911
Now multiplying the highest exponent prime factors to calculate the LCM of 985 and 991.
LCM(985,991) = 51×1971×9911
LCM(985,991) = 976135
Factors of 985
List of positive integer factors of 985 that divides 985 without a remainder.
1, 5, 197, 985
Factors of 991
List of positive integer factors of 991 that divides 991 without a remainder.
1, 991
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 985 and 991, than apply into the LCM equation.
GCF(985,991) = 1
LCM(985,991) = ( 985 × 991) / 1
LCM(985,991) = 976135 / 1
LCM(985,991) = 976135
(i) The LCM of 991 and 985 is associative
LCM of 985 and 991 = LCM of 991 and 985
1. What is the LCM of 985 and 991?
Answer: LCM of 985 and 991 is 976135.
2. What are the Factors of 985?
Answer: Factors of 985 are 1, 5, 197, 985. There are 4 integers that are factors of 985. The greatest factor of 985 is 985.
3. 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.
4. How to Find the LCM of 985 and 991?
Answer:
Least Common Multiple of 985 and 991 = 976135
Step 1: Find the prime factorization of 985
985 = 5 x 197
Step 2: Find the prime factorization of 991
991 = 991
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 976135 = 5 x 197 x 991
Step 4: Therefore, the least common multiple of 985 and 991 is 976135.