Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 256 and 258 the smallest integer that is 33024 that is divisible by both numbers.
Least Common Multiple (LCM) of 256 and 258 is 33024.
LCM(256,258) = 33024
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 256 and 258. First we will calculate the prime factors of 256 and 258.
Prime Factorization of 256
2 | 256 |
2 | 128 |
2 | 64 |
2 | 32 |
2 | 16 |
2 | 8 |
2 | 4 |
2 | 2 |
1 |
Prime factors of 256 are 2. Prime factorization of 256 in exponential form is:
256 = 28
Prime Factorization of 258
2 | 258 |
3 | 129 |
43 | 43 |
1 |
Prime factors of 258 are 2, 3,43. Prime factorization of 258 in exponential form is:
258 = 21×31×431
Now multiplying the highest exponent prime factors to calculate the LCM of 256 and 258.
LCM(256,258) = 28×31×431
LCM(256,258) = 33024
Factors of 256
List of positive integer factors of 256 that divides 256 without a remainder.
1, 2, 4, 8, 16, 32, 64, 128, 256
Factors of 258
List of positive integer factors of 258 that divides 258 without a remainder.
1, 2, 3, 6, 43, 86, 129, 258
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 256 and 258, than apply into the LCM equation.
GCF(256,258) = 2
LCM(256,258) = ( 256 × 258) / 2
LCM(256,258) = 66048 / 2
LCM(256,258) = 33024
(i) The LCM of 258 and 256 is associative
LCM of 256 and 258 = LCM of 258 and 256
1. What is the LCM of 256 and 258?
Answer: LCM of 256 and 258 is 33024.
2. What are the Factors of 256?
Answer: Factors of 256 are 1, 2, 4, 8, 16, 32, 64, 128, 256. There are 9 integers that are factors of 256. The greatest factor of 256 is 256.
3. What are the Factors of 258?
Answer: Factors of 258 are 1, 2, 3, 6, 43, 86, 129, 258. There are 8 integers that are factors of 258. The greatest factor of 258 is 258.
4. How to Find the LCM of 256 and 258?
Answer:
Least Common Multiple of 256 and 258 = 33024
Step 1: Find the prime factorization of 256
256 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2
Step 2: Find the prime factorization of 258
258 = 2 x 3 x 43
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 33024 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 43
Step 4: Therefore, the least common multiple of 256 and 258 is 33024.