83 and 89.
2,3,5
Scroll down to related links and look at "List of prime numbers - Wikipedia".
That's a theoretically infinite list. I can't write down an infinite list.
Somewhere in front of you was a list of numbers. The instructions were asking you to break down the numbers and write them as a product of their prime factors. This is known as the prime factorization. The prime factorization of 30 is 2 x 3 x 5.
501
Every composite number can be broken down into its factors, and if you break those factors down as far as you can go, then you have a list of the prime factors of the composite number that you started with.
Write down all the numbers between 4 and 40. Cross out the prime numbers and count them. You need to do your own math and getting the answer here won't help you pass your state standards.
41 43 47 53 59 61 67 71 73 79 83 87 89 97
1751 6817x3 4x172x2you circle the prime numbers and break down the composite numbers until they are all prime. The circled one on this that is the same between the two is 17.
The only prime between 8 and 12 is 11.To find out if a number is prime, just try dividing it by all prime numbers between 2 and that number (including 2). The easiest method to do this is to write all numbers from 2 to your number down. Then cross out all numbers divisible by 2. Now cross out all numbers divisible by the next lowest number that is not crossed out (which is 3). Repeat this last step (the next number should be 5, then 7, then 11) until you reach your number, or you cross it out. If you have crossed it out, it is not a prime number, and if it has not been crossed out it is a prime number.
7*2*5