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 257 the smallest integer that is 64507 that is divisible by both numbers.
Least Common Multiple (LCM) of 251 and 257 is 64507.
LCM(251,257) = 64507
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 257. First we will calculate the prime factors of 251 and 257.
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 257
257 | 257 |
1 |
Prime factors of 257 are 257. Prime factorization of 257 in exponential form is:
257 = 2571
Now multiplying the highest exponent prime factors to calculate the LCM of 251 and 257.
LCM(251,257) = 2511×2571
LCM(251,257) = 64507
Factors of 251
List of positive integer factors of 251 that divides 251 without a remainder.
1, 251
Factors of 257
List of positive integer factors of 257 that divides 257 without a remainder.
1, 257
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 251 and 257, than apply into the LCM equation.
GCF(251,257) = 1
LCM(251,257) = ( 251 × 257) / 1
LCM(251,257) = 64507 / 1
LCM(251,257) = 64507
(i) The LCM of 257 and 251 is associative
LCM of 251 and 257 = LCM of 257 and 251
1. What is the LCM of 251 and 257?
Answer: LCM of 251 and 257 is 64507.
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 257?
Answer: Factors of 257 are 1, 257. There are 2 integers that are factors of 257. The greatest factor of 257 is 257.
4. How to Find the LCM of 251 and 257?
Answer:
Least Common Multiple of 251 and 257 = 64507
Step 1: Find the prime factorization of 251
251 = 251
Step 2: Find the prime factorization of 257
257 = 257
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 64507 = 251 x 257
Step 4: Therefore, the least common multiple of 251 and 257 is 64507.