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If you consider 1 and the Prime number itself as factors then: 2
If you do not consider 1 and the prime number as factors then: 0
A prime number is one that does not have any factors apart from 1 and itself.
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Which number has exactly 15 factors?
The number that has exactly 15 factors is 28. To determine the number of factors a number has, you can prime factorize the number and then add 1 to each exponent in the prime factorization and multiply these numbers together. In the case of 28, the prime factorization is 2^2 * 7^1, so the number of factors is (2+1) * (1+1) = 3 * 2 = 6. To have exactly 15 factors, the number needs to be a square of a prime number, so 28 = 2^2 * 7^1 fits this criteria.
How do you express a number as the product of powers of its prime factors?
You factor the number into prime factors, dividing each prime out.
Which is a prime number 33 43 63?
33 has the factors ,3, & '11' ; it is composite 43 has no factors ; it is a prime number 63 has the factors 3,7,9,21 ; it is composite.
Factors of each number that is prime?
Just two: 1 and the number itself.
What is the least positive integer that has exactly 13 factors?
4096 is the smallest number with exactly 13 factors. (Including 1 and itself as factors).192 is the smallest number with exactly 13 properfactors, (excluding the number itself).120 is the smallest number with at least 13 factors (it has 16 factors)To find the smallest number with exactly N factors (for example, N=12):Factor N into primes, (for example, 12= 2*2*3Subtract 1 from each of the prime factors (for example, 1,1,2)Sort them by largest first (for example, 2,1,1)Raise successive prime numbers to these powers (for example, 2^2,3^1,5^1)Multiply these together (for example: 4*3*5 = 60; 60 is the smallest number with exactly 12 factors).
When you have a number that has exactly two equal factors each factor is called what?
prime number
Each prime no has exactly how many factors?
2.
Which number has exactly 15 factors?
The number that has exactly 15 factors is 28. To determine the number of factors a number has, you can prime factorize the number and then add 1 to each exponent in the prime factorization and multiply these numbers together. In the case of 28, the prime factorization is 2^2 * 7^1, so the number of factors is (2+1) * (1+1) = 3 * 2 = 6. To have exactly 15 factors, the number needs to be a square of a prime number, so 28 = 2^2 * 7^1 fits this criteria.
What numbers have exactly 2 factors each?
Prime numbers
Why are there 25 prime numbers from 1-100?
Each of the 25 prime numbers from 1 to 100 has exactly two factors, 1 and the number itself. The other 75 numbers from 1 to 100 are not prime numbers because none of them have exactly two factors.
How do you express a number as the product of powers of its prime factors?
You factor the number into prime factors, dividing each prime out.
How many factors to each prime number have?
Prime numbers have as factors the number 1 and their own number. Example: 37 is a prime number because its only factors are "1" and "37". If the prime number had further factors, it would no longer be prime.
Which is a prime number 33 43 63?
33 has the factors ,3, & '11' ; it is composite 43 has no factors ; it is a prime number 63 has the factors 3,7,9,21 ; it is composite.
How many numbers are there less than thirty have exactly 6 factors?
Numbers with exactly 6 factors are perfect squares of prime numbers. The prime factorization of a number with exactly 6 factors is in the form ( p^2 ), where ( p ) is a prime number. There are 10 prime numbers less than 30: 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. So, there are 10 numbers less than 30 that have exactly 6 factors.
Will a greater number always have more factors than a smaller number?
No. For example, 30 has the factors 1, 2, 3, 5, 6, 10, 15, 30; while 31 only has the factors 1 and 31 - in other words, it's a prime number. Note that there are arbitrarily large prime numbers (there is no last prime number); each of them has exactly two factors.
What number between 30 and 50 have exactly 2 factors each?
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
What are facts about each digit of 22?
Each digit is a prime number that has only two factors which are itself and one The prime factors of the number 22 are 2 and 11
