Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1979 and 1984 the smallest integer that is 3926336 that is divisible by both numbers.
Least Common Multiple (LCM) of 1979 and 1984 is 3926336.
LCM(1979,1984) = 3926336
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 1979 and 1984. First we will calculate the prime factors of 1979 and 1984.
Prime Factorization of 1979
1979 | 1979 |
1 |
Prime factors of 1979 are 1979. Prime factorization of 1979 in exponential form is:
1979 = 19791
Prime Factorization of 1984
2 | 1984 |
2 | 992 |
2 | 496 |
2 | 248 |
2 | 124 |
2 | 62 |
31 | 31 |
1 |
Prime factors of 1984 are 2,31. Prime factorization of 1984 in exponential form is:
1984 = 26×311
Now multiplying the highest exponent prime factors to calculate the LCM of 1979 and 1984.
LCM(1979,1984) = 26×311×19791
LCM(1979,1984) = 3926336
Factors of 1979
List of positive integer factors of 1979 that divides 1979 without a remainder.
1, 1979
Factors of 1984
List of positive integer factors of 1984 that divides 1984 without a remainder.
1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 248, 496, 992, 1984
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1979 and 1984, than apply into the LCM equation.
GCF(1979,1984) = 1
LCM(1979,1984) = ( 1979 × 1984) / 1
LCM(1979,1984) = 3926336 / 1
LCM(1979,1984) = 3926336
(i) The LCM of 1984 and 1979 is associative
LCM of 1979 and 1984 = LCM of 1984 and 1979
1. What is the LCM of 1979 and 1984?
Answer: LCM of 1979 and 1984 is 3926336.
2. What are the Factors of 1979?
Answer: Factors of 1979 are 1, 1979. There are 2 integers that are factors of 1979. The greatest factor of 1979 is 1979.
3. What are the Factors of 1984?
Answer: Factors of 1984 are 1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 248, 496, 992, 1984. There are 14 integers that are factors of 1984. The greatest factor of 1984 is 1984.
4. How to Find the LCM of 1979 and 1984?
Answer:
Least Common Multiple of 1979 and 1984 = 3926336
Step 1: Find the prime factorization of 1979
1979 = 1979
Step 2: Find the prime factorization of 1984
1984 = 2 x 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 = 3926336 = 2 x 2 x 2 x 2 x 2 x 2 x 31 x 1979
Step 4: Therefore, the least common multiple of 1979 and 1984 is 3926336.