Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 251 and 256 the smallest integer that is 64256 that is divisible by both numbers.
Least Common Multiple (LCM) of 251 and 256 is 64256.
LCM(251,256) = 64256
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 251 and 256. First we will calculate the prime factors of 251 and 256.
Prime Factorization of 251
251 | 251 |
1 |
Prime factors of 251 are 251. Prime factorization of 251 in exponential form is:
251 = 2511
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
Now multiplying the highest exponent prime factors to calculate the LCM of 251 and 256.
LCM(251,256) = 28×2511
LCM(251,256) = 64256
Factors of 251
List of positive integer factors of 251 that divides 251 without a remainder.
1, 251
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
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 251 and 256, than apply into the LCM equation.
GCF(251,256) = 1
LCM(251,256) = ( 251 × 256) / 1
LCM(251,256) = 64256 / 1
LCM(251,256) = 64256
(i) The LCM of 256 and 251 is associative
LCM of 251 and 256 = LCM of 256 and 251
1. What is the LCM of 251 and 256?
Answer: LCM of 251 and 256 is 64256.
2. What are the Factors of 251?
Answer: Factors of 251 are 1, 251. There are 2 integers that are factors of 251. The greatest factor of 251 is 251.
3. 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.
4. How to Find the LCM of 251 and 256?
Answer:
Least Common Multiple of 251 and 256 = 64256
Step 1: Find the prime factorization of 251
251 = 251
Step 2: Find the prime factorization of 256
256 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 64256 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 251
Step 4: Therefore, the least common multiple of 251 and 256 is 64256.