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The GCF of 138, 253, and 805 is 23.

The prime factorization of 138 is 2*3*23
The prime factorization of 253 is 11*23
The prime factorization of 805 is 5*7*23

Thus, the GCF of 138, 253, and 805 is 23.

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8y ago
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7y ago

The GCF is 23.

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12y ago

23

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Q: What is the greatest common factor of 138 253 and 805?
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Related questions

What is the greatest common factor and least common multiple of 11 and 23?

The GCF is: 1The LCM is: 253


What is 253 takeaway 138?

253 - 138 = 115


What is the equal of 253 and 138?

253 + 138 = 391


What is te gcf of 253?

There cannot be a greatest common factor of just one number. To be common there need to be at least two numbers.


What is the greatest common factor of 121?

There is not a greatest common factor of a single number, such as 121, because there cannot be a greatest common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor.The factors of 121 are 1, 11, and 121.The only prime factor of 121 is 11.Examples:The greatest common factor of 11 and 63 is 1.The greatest common factor of 11 and 154 is 11.The greatest common factor of 11, 99, and 253 is 11.


What is the GCF of 153 and 357?

GCF of 253 is 253.There cannot be a greatest common factor of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.


Does 253 have any common factors with 500?

Yes, the only common factor is 1


What is the greatest common factor of 115 and 138?

Expressing each number as the product of their prime factors is one of the methods of finding greatest common factor.115 = 5 x 23225 = 3 x 3 x 5 x 5As it can be seen only one 5 is common so GCF is 1.Another method which can be employed is long division method.Long division method is based on Euclid's Division Lemma.Lemma is: For two integers a and b(a>b; b ≠ 0) there exist two integers q and r such that a = bq+ rApplying the theorem to 225 and 115 we get.Step I225 = 115 x 1 + 110Now the remainder and divisor in step I becomes divisor and dividend for step II.Step II115 = 110 x 1 + 5Step III110 = 5 x 22 + 0When the remainder is 0 then the last divisor is the required GCF, which in this case is 5.The main reason for taking remainder and divisor for next step as divisor and dividend is that factors common between 225 and 115 are also common between 110(r) and 115(q).


What is a factor tree for 253?

253 11,23


What is the least common multiple of 11 and 23?

The LCM or least common multiple is 253. In this case, the greatest common factor of the two numbers is 1. That is to say, they have no other common factors. We call these numbers relatively prime. When two numbers are relatively prime their LCM is always the product of the two numbers.Sometimes it is easier to find the greatest common factor than to find the least common multiple by looking at multiples of both numbers. This is true if the numbers are primes like 11 and 23. So if you are give two primes, the LCM will always be the product of the two numbers.


What are the factor pairs of 253?

(1, 253) and (11, 23)


Can you show me a factor tree for 253?

253 11,23 Not much of a tree. More like a factor shrub.