Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7948 and 7956 the smallest integer that is 15808572 that is divisible by both numbers.
Least Common Multiple (LCM) of 7948 and 7956 is 15808572.
LCM(7948,7956) = 15808572
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 7948 and 7956. First we will calculate the prime factors of 7948 and 7956.
Prime Factorization of 7948
2 | 7948 |
2 | 3974 |
1987 | 1987 |
1 |
Prime factors of 7948 are 2,1987. Prime factorization of 7948 in exponential form is:
7948 = 22×19871
Prime Factorization of 7956
2 | 7956 |
2 | 3978 |
3 | 1989 |
3 | 663 |
13 | 221 |
17 | 17 |
1 |
Prime factors of 7956 are 2, 3, 13,17. Prime factorization of 7956 in exponential form is:
7956 = 22×32×131×171
Now multiplying the highest exponent prime factors to calculate the LCM of 7948 and 7956.
LCM(7948,7956) = 22×32×131×171×19871
LCM(7948,7956) = 15808572
Factors of 7948
List of positive integer factors of 7948 that divides 7948 without a remainder.
1, 2, 4, 1987, 3974, 7948
Factors of 7956
List of positive integer factors of 7956 that divides 7956 without a remainder.
1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 34, 36, 39, 51, 52, 68, 78, 102, 117, 153, 156, 204, 221, 234, 306, 442, 468, 612, 663, 884, 1326, 1989, 2652, 3978, 7956
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7948 and 7956, than apply into the LCM equation.
GCF(7948,7956) = 4
LCM(7948,7956) = ( 7948 × 7956) / 4
LCM(7948,7956) = 63234288 / 4
LCM(7948,7956) = 15808572
(i) The LCM of 7956 and 7948 is associative
LCM of 7948 and 7956 = LCM of 7956 and 7948
1. What is the LCM of 7948 and 7956?
Answer: LCM of 7948 and 7956 is 15808572.
2. What are the Factors of 7948?
Answer: Factors of 7948 are 1, 2, 4, 1987, 3974, 7948. There are 6 integers that are factors of 7948. The greatest factor of 7948 is 7948.
3. What are the Factors of 7956?
Answer: Factors of 7956 are 1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 34, 36, 39, 51, 52, 68, 78, 102, 117, 153, 156, 204, 221, 234, 306, 442, 468, 612, 663, 884, 1326, 1989, 2652, 3978, 7956. There are 36 integers that are factors of 7956. The greatest factor of 7956 is 7956.
4. How to Find the LCM of 7948 and 7956?
Answer:
Least Common Multiple of 7948 and 7956 = 15808572
Step 1: Find the prime factorization of 7948
7948 = 2 x 2 x 1987
Step 2: Find the prime factorization of 7956
7956 = 2 x 2 x 3 x 3 x 13 x 17
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 15808572 = 2 x 2 x 3 x 3 x 13 x 17 x 1987
Step 4: Therefore, the least common multiple of 7948 and 7956 is 15808572.