Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 981 and 985 the smallest integer that is 966285 that is divisible by both numbers.
Least Common Multiple (LCM) of 981 and 985 is 966285.
LCM(981,985) = 966285
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 981 and 985. First we will calculate the prime factors of 981 and 985.
Prime Factorization of 981
3 | 981 |
3 | 327 |
109 | 109 |
1 |
Prime factors of 981 are 3,109. Prime factorization of 981 in exponential form is:
981 = 32×1091
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
Now multiplying the highest exponent prime factors to calculate the LCM of 981 and 985.
LCM(981,985) = 32×51×1091×1971
LCM(981,985) = 966285
Factors of 981
List of positive integer factors of 981 that divides 981 without a remainder.
1, 3, 9, 109, 327, 981
Factors of 985
List of positive integer factors of 985 that divides 985 without a remainder.
1, 5, 197, 985
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 981 and 985, than apply into the LCM equation.
GCF(981,985) = 1
LCM(981,985) = ( 981 × 985) / 1
LCM(981,985) = 966285 / 1
LCM(981,985) = 966285
(i) The LCM of 985 and 981 is associative
LCM of 981 and 985 = LCM of 985 and 981
1. What is the LCM of 981 and 985?
Answer: LCM of 981 and 985 is 966285.
2. What are the Factors of 981?
Answer: Factors of 981 are 1, 3, 9, 109, 327, 981. There are 6 integers that are factors of 981. The greatest factor of 981 is 981.
3. 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.
4. How to Find the LCM of 981 and 985?
Answer:
Least Common Multiple of 981 and 985 = 966285
Step 1: Find the prime factorization of 981
981 = 3 x 3 x 109
Step 2: Find the prime factorization of 985
985 = 5 x 197
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 966285 = 3 x 3 x 5 x 109 x 197
Step 4: Therefore, the least common multiple of 981 and 985 is 966285.