Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7738 and 7742 the smallest integer that is 29953798 that is divisible by both numbers.
Least Common Multiple (LCM) of 7738 and 7742 is 29953798.
LCM(7738,7742) = 29953798
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 7738 and 7742. First we will calculate the prime factors of 7738 and 7742.
Prime Factorization of 7738
2 | 7738 |
53 | 3869 |
73 | 73 |
1 |
Prime factors of 7738 are 2, 53,73. Prime factorization of 7738 in exponential form is:
7738 = 21×531×731
Prime Factorization of 7742
2 | 7742 |
7 | 3871 |
7 | 553 |
79 | 79 |
1 |
Prime factors of 7742 are 2, 7,79. Prime factorization of 7742 in exponential form is:
7742 = 21×72×791
Now multiplying the highest exponent prime factors to calculate the LCM of 7738 and 7742.
LCM(7738,7742) = 21×72×531×731×791
LCM(7738,7742) = 29953798
Factors of 7738
List of positive integer factors of 7738 that divides 7738 without a remainder.
1, 2, 53, 73, 106, 146, 3869, 7738
Factors of 7742
List of positive integer factors of 7742 that divides 7742 without a remainder.
1, 2, 7, 14, 49, 79, 98, 158, 553, 1106, 3871, 7742
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7738 and 7742, than apply into the LCM equation.
GCF(7738,7742) = 2
LCM(7738,7742) = ( 7738 × 7742) / 2
LCM(7738,7742) = 59907596 / 2
LCM(7738,7742) = 29953798
(i) The LCM of 7742 and 7738 is associative
LCM of 7738 and 7742 = LCM of 7742 and 7738
1. What is the LCM of 7738 and 7742?
Answer: LCM of 7738 and 7742 is 29953798.
2. What are the Factors of 7738?
Answer: Factors of 7738 are 1, 2, 53, 73, 106, 146, 3869, 7738. There are 8 integers that are factors of 7738. The greatest factor of 7738 is 7738.
3. What are the Factors of 7742?
Answer: Factors of 7742 are 1, 2, 7, 14, 49, 79, 98, 158, 553, 1106, 3871, 7742. There are 12 integers that are factors of 7742. The greatest factor of 7742 is 7742.
4. How to Find the LCM of 7738 and 7742?
Answer:
Least Common Multiple of 7738 and 7742 = 29953798
Step 1: Find the prime factorization of 7738
7738 = 2 x 53 x 73
Step 2: Find the prime factorization of 7742
7742 = 2 x 7 x 7 x 79
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 29953798 = 2 x 7 x 7 x 53 x 73 x 79
Step 4: Therefore, the least common multiple of 7738 and 7742 is 29953798.