Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 989 and 992 the smallest integer that is 981088 that is divisible by both numbers.
Least Common Multiple (LCM) of 989 and 992 is 981088.
LCM(989,992) = 981088
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 989 and 992. First we will calculate the prime factors of 989 and 992.
Prime Factorization of 989
23 | 989 |
43 | 43 |
1 |
Prime factors of 989 are 23,43. Prime factorization of 989 in exponential form is:
989 = 231×431
Prime Factorization of 992
2 | 992 |
2 | 496 |
2 | 248 |
2 | 124 |
2 | 62 |
31 | 31 |
1 |
Prime factors of 992 are 2,31. Prime factorization of 992 in exponential form is:
992 = 25×311
Now multiplying the highest exponent prime factors to calculate the LCM of 989 and 992.
LCM(989,992) = 25×231×311×431
LCM(989,992) = 981088
Factors of 989
List of positive integer factors of 989 that divides 989 without a remainder.
1, 23, 43, 989
Factors of 992
List of positive integer factors of 992 that divides 992 without a remainder.
1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 992
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 989 and 992, than apply into the LCM equation.
GCF(989,992) = 1
LCM(989,992) = ( 989 × 992) / 1
LCM(989,992) = 981088 / 1
LCM(989,992) = 981088
(i) The LCM of 992 and 989 is associative
LCM of 989 and 992 = LCM of 992 and 989
1. What is the LCM of 989 and 992?
Answer: LCM of 989 and 992 is 981088.
2. What are the Factors of 989?
Answer: Factors of 989 are 1, 23, 43, 989. There are 4 integers that are factors of 989. The greatest factor of 989 is 989.
3. What are the Factors of 992?
Answer: Factors of 992 are 1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 992. There are 12 integers that are factors of 992. The greatest factor of 992 is 992.
4. How to Find the LCM of 989 and 992?
Answer:
Least Common Multiple of 989 and 992 = 981088
Step 1: Find the prime factorization of 989
989 = 23 x 43
Step 2: Find the prime factorization of 992
992 = 2 x 2 x 2 x 2 x 2 x 31
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 981088 = 2 x 2 x 2 x 2 x 2 x 23 x 31 x 43
Step 4: Therefore, the least common multiple of 989 and 992 is 981088.