Q: Why would you divide 61 using prime numbers only?

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The mean is the average. You simply add all the numbers and divide by how many numbers there are. So the mean of 16 numbers would be the sum of all 16 numbers, divided by 16.

This is basically just a fancy way of asking you "What are the prime numbers between 30 and 50?" Prime numbers are numbers that have only two factors (numbers that divide evenly into the original number): one and themselves. Prime Examples: 2, 3, and 5 -- factors are 1 and 2, 1 and 3, and 1 and 5 Not Prime: 4 and 6 -- factors are 1, 2, and 4, and 1, 2, 3, and 6 So, the prime numbers between 30 and 50 would be: 31, 37, 41, 43, and 47

The set of prime factors of the numbers from 1 to 15,000 would be the set of prime numbers between 1 and 15,000. The link below has a list of the first 10,000 prime numbers, so if you take the primes less than 15,000, you will have the set of prime factors of the first 15,000 numbers. For prime factors of individual numbers, check the related question, "What are the prime factors of the numbers from 1 to 200?" Also check for WikiAnswers questions in the form of "What are the prime factors of __?" and "What are the factors and prime factors of __?"

Euclid (c. 300 BC) was one of the first to prove that there are infinitely many prime numbers. His proof was essentially to assume that there were a finite number of prime numbers, and arrive at a contradiction. Thus, there must be infinitely many prime numbers. Specifically, he supposed that if there were a finite number of prime numbers, then if one were to multiply all those prime numbers together and add 1, it would result in a number that was not divisible by any of the (finite number of) prime numbers, thus would itself be a prime number larger than the largest prime number in the assumed list - a contradiction.

1. you add up all of the numbers that you have. And then you divide the number of numbers you had so if i did 6,5,7 i would do 6+5+7=18 then i have three numbers so divide 18 by 3=6 and that would be my answer

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29 and 31

All composite numbers can be expressed as unique products of prime numbers. This is accomplished by dividing the original number and its factors by prime numbers until all the factors are prime. A factor tree can help you visualize this. Example: 210 210 Divide by two. 105,2 Divide by three. 35,3,2 Divide by five. 7,5,3,2 Stop. All the factors are prime. 2 x 3 x 5 x 7 = 210 That's the prime factorization of 210.

To get a prime factor, you would divide.

You have to find the smallest prime number that can go into 76, which is 2 and find out what 76/2 is. The, you would have to take the non-prime number and find the smallest prime number that can go into that, and divide by those to numbers again. The prime number you had with 76, you would keep that and keep dividing the non-prime numbers until you end up with all prime numbers.

All composite numbers can be expressed as unique products of prime numbers. This is accomplished by dividing the original number and its factors by prime numbers until all the factors are prime. A factor tree can help you visualize this.Example: 210210 Divide by two.105,2 Divide by three.35,3,2 Divide by five.7,5,3,2 Stop. All the factors are prime.2 x 3 x 5 x 7 = 210That's the prime factorization of 210.

Prime numbers.

61 and 73 are prime numbers. Prime numbers don't have prime factorizations, since their only prime factors are themselves. Since these would have to be different numbers, they don't have any prime factors in common. The GCF of any set of prime numbers is 1.

All prime numbers are odd numbers. If one were even, it would be divisible by two and would, therefore, not be prime.

5,7,11,13 are prime I would suggest looking into the sieve of erasthenes for further reading. For tests, look at odd numbers and see if odd numbers divide them. ie 9 is not in the lsit because it is divisible by 3. Even numbers are always divisible by two.

Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.

A number as a product of prime numbers would be "x".

Prime numbers are the numbers that can only be divided by 1 and them selves. As in 13 if you were to factor it using only whole numbers you would see that its factors are only 1 and 13. There for it is prime. While 12 you see that the factors are 1,2,3,4,6,12 meaning that it is not prime.You test several numbers, to see whether they are prime numbers, until you find a prime number.