Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7991 and 7996 the smallest integer that is 63896036 that is divisible by both numbers.
Least Common Multiple (LCM) of 7991 and 7996 is 63896036.
LCM(7991,7996) = 63896036
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 7991 and 7996. First we will calculate the prime factors of 7991 and 7996.
Prime Factorization of 7991
61 | 7991 |
131 | 131 |
1 |
Prime factors of 7991 are 61,131. Prime factorization of 7991 in exponential form is:
7991 = 611×1311
Prime Factorization of 7996
2 | 7996 |
2 | 3998 |
1999 | 1999 |
1 |
Prime factors of 7996 are 2,1999. Prime factorization of 7996 in exponential form is:
7996 = 22×19991
Now multiplying the highest exponent prime factors to calculate the LCM of 7991 and 7996.
LCM(7991,7996) = 22×611×1311×19991
LCM(7991,7996) = 63896036
Factors of 7991
List of positive integer factors of 7991 that divides 7991 without a remainder.
1, 61, 131, 7991
Factors of 7996
List of positive integer factors of 7996 that divides 7996 without a remainder.
1, 2, 4, 1999, 3998, 7996
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7991 and 7996, than apply into the LCM equation.
GCF(7991,7996) = 1
LCM(7991,7996) = ( 7991 × 7996) / 1
LCM(7991,7996) = 63896036 / 1
LCM(7991,7996) = 63896036
(i) The LCM of 7996 and 7991 is associative
LCM of 7991 and 7996 = LCM of 7996 and 7991
1. What is the LCM of 7991 and 7996?
Answer: LCM of 7991 and 7996 is 63896036.
2. What are the Factors of 7991?
Answer: Factors of 7991 are 1, 61, 131, 7991. There are 4 integers that are factors of 7991. The greatest factor of 7991 is 7991.
3. What are the Factors of 7996?
Answer: Factors of 7996 are 1, 2, 4, 1999, 3998, 7996. There are 6 integers that are factors of 7996. The greatest factor of 7996 is 7996.
4. How to Find the LCM of 7991 and 7996?
Answer:
Least Common Multiple of 7991 and 7996 = 63896036
Step 1: Find the prime factorization of 7991
7991 = 61 x 131
Step 2: Find the prime factorization of 7996
7996 = 2 x 2 x 1999
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 63896036 = 2 x 2 x 61 x 131 x 1999
Step 4: Therefore, the least common multiple of 7991 and 7996 is 63896036.