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What is the name of Eratosthenes' method of finding composite numbers?
Wiki User
∙ 11y ago
Eratosthenes' method of finding prime and composite number is called 'The Sieve of Eratosthene'.
Wiki User
∙ 11y ago
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What is the longest string of consecutive composite numbers?
when i did this problem i was doing a eratosthenes sieve method and the numbers was from 1-100 so i got the longest string of consecutive composite numbers on the grid are 74-82 this should be right. BTW I'm 13 doing my moms college work Sorry, but 79 is a prime number. I got 90~96
How do you notice that it is factors or prime or composite numbers?
First of all, every number is a factor - of its multiples.There is no general way to distinguish between prime and composite numbers. At one level, though, there are some simple ways. If the number is not 2, but ends in 0, 2, 4, 6 or 8 then it is a composite, If the number is not 5 but ends in 0 or 5 it is composite. If the number is not 3 but the sum of all the digits of a number is 3 or divisible by 3, then it is composite. There are moderately complicated divisibility rules for 7 and 11. But this method does not identify all composite numbers and there is no guaranteed method.
How do you use the greatest common factor subtraction method?
If you have two numbers A and B, and A > B, then GCF(A, B) = (A-B, B) Thus the problem of finding the GCF of A and B has been reduced to finding the GCF of B and a smaller number, A-B. This process can be continued until the two numbers are the same: and that number is the GCF.
A prime number is an integer greater than 1 whose only positive divisors are and the integer itself one method for finding all the prime numbers in the range 2 through n is known as the sieve of erat?
The sieve is just a method for finding primes. You write down the numbers 2 through n (lets say n = 100). And you go through the list crossing off numbers in a set way. You start with 2, and cross off 4,6,8,10, etc etc, all the way to 100. Then you go to 3, and cross off 6,9,12,15, etc all the way to 100. Then you go to the next number (four has already been crossed off when you did 2 so we're at 5 now), cross off 10,15,20,25, etc.. all the way to 100, etc etc etc through the list till you do the last one at n/2 (50). What you have in front of you now is a list of all the prime numbers from 2 to n (100), since everything else that is composite (not prime), has been crossed out.
How do you express the prime numbers in factor tree method?
Since prime numbers only have one prime factor (themselves), factor trees are unnecessary.
How was the Mathematician who found a very simple method for finding the prime and composite numbers in the third century BC?
Eratosthenes
What is the name of Eratosthenes method of finding prime numbers?
It is called a sieve.
Why is the prime number grid called the sieve?
One method for finding prime numbers is called the "Sieve of Eratosthenes" because it basically "sifts" through the numbers looking for numbers that are not not prime.
Who was the mathematician who suggested a simple method for finding the prime numbers up to a given natural number?
The method of sieving the multiples of prime numbers until only the prime numbers remain, while attributed to Eratosthenes, is originally thought to have been the work of Nicomachus.
Who device the method that will separate prime from a set of whole numbers?
Eratosthenes created a sieve that will do that.
What is the longest string of consecutive composite numbers?
when i did this problem i was doing a eratosthenes sieve method and the numbers was from 1-100 so i got the longest string of consecutive composite numbers on the grid are 74-82 this should be right. BTW I'm 13 doing my moms college work Sorry, but 79 is a prime number. I got 90~96
Whats the method for finding a composite number that contains exactly two factors other than itself and 1?
It is a semi-prime, which is a product of two prime numbers.
What is your method of identifying all the composite numbers?
If a number has more than two factors, it's composite.
What date was Sieve Eratosthenes born?
About 276 BC Eratosthenes was a Greek mathematician who is credited with a simple method of making a list of as many primes as you wish. His method is known as the Sieve of Eratosthenes.
What is the method to find the prime factors of a composite number?
prime numbers
What Method used to find composite numbers?
To find a composite number, check if the number can be divided by 2,3,4,5, ect. If it can, it`s composite. If not, it`s prime.
Is there an easy way to work out prime numbers up to 100?
The method know as The sieve of Eratosthenes is the easiest method. you simply write down all the numbers from 1 to 100 in rows of 10 and then you go through and you mark out all of the multiples of 2,3,4,5,6,7,8,9,10
