0
How many integers between 13 and 19 inclusive have an even number of prime factors?
Wiki User
∙ 12y ago
13 is prime
14=2x7, 2 factors
15=3x5, 2 factors
16=24, 4 factors
17 is prime
18=2x32, 3 factors
19 is prime
So the answer is 3 (14, 15 and 16)
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What are the factors of this rectangular number?
A rectangular number is a number which is the product of two consecutive integers.
Where are the integers on a number line?
If you have drawn a number line counting in whole numbers, the integers are those whole number points. Any decimal numbers in between are not integers.
What is the smallest number with exactly four factors?
Among positive integers, 6
Is a rational number a subset of the set of integers?
not necessarily... An integer is a rational number, but so is any real number between consecutive integers.
Find the number of factors that the number 25 has?
1, 5, 25 are the only factors of 25. So, there are 3 factors of 25. Note: We only care about POSITIVE INTEGERS.
How many positive integers have exactly three digits?
Every number from 100 to 999 inclusive !
What is the first number to have the factors 1-6 inclusive?
60
How many positive integers less than 2010 have an odd number of factors?
There are 44 positive integers less than 2,010 that have an odd number of factors.
What are the factors of this rectangular number?
A rectangular number is a number which is the product of two consecutive integers.
How many square numbers between 100 and 1000?
Infinitely many, since every positive number is a square of some other number. However, there are 21 perfect squares (SQUARES OF INTEGERS). From 112 to 312, inclusive.
When a product of integers has an even number of negative factors?
It will be even.
What is the sum of numbers 1 to 99?
The sum of the integers 1 to 99 is 4950. An easy way to figure this out is using the equation N*(N+1)/2 where N is the largest number in the set.
What are the factors of 1.01?
Factors of 101 are 1 and 101. So, it is a prime number.
What are all the factors of the Numbers's?
The factors of a number comprises all positive integers which go into it evenly.
Is every number a composite number?
No, only the integers with more than two factors.
What are some negative integers between a positive one on the number line?
There are no negative integers between positive ones on the number line.
What is the sum of 1 - 90?
-89
