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How do you know that the product of any two numbers greater than i must be a composite number?
Prime numbers have only two factors: one and themselves. By definition, your product would have more than that: one, the product and at least the two numbers that created the product. It has to be composite.
Are every even number has at least two factors?
Every even number but 2. Even numbers have 2 as a factor (by definition), so higher even numbers can be separated into two factors, 2 and some other number. For example, 6 = 2 x 3.
Is it possible for two numbers to have no common factors?
No because every single number has a factor of one, therefore you have one as the common factor.
Is the product of 21 negative numbers and 23 positive numbers a positive number or a negative number?
It is a negative number, because every pair of negative factors makes a positive, and you have 10 pairs plus one left over.
What are numbers called with only one factor?
The only number with a single factor is ' 1 '. Every other number has at least two factors: ' 1 ' and itself. A number with only those two factors and no others is called a "prime" number.
What two numbers does every number greater than 1 have as factors?
' 1 ' and itself.
What is prime factors numbers?
Every positive integer greater than 1 can be expressed as the product of a unique set of prime factors. The count of these factors is the prime factors number for the number.
How many factors does every natural number greater then 1 had at least?
2 factors, but a prime number has only two factors (itself and one). Note that 1 is not considered to be a prime number.
Does every number have an even number of factors?
No, square numbers have an odd number of factors.
Does every positive integer greater than 20 have an even number of factors?
No. They have different number of factors
How do you figure out prime numbers not knowing there factors?
But you do know the factors of prime numbers. Every prime number has two factors: one and the number itself.
What are the number that greater than 2 are composite?
There are an infinite amount of numbers greater than two that are composite numbers. Every even number, for instance, is a composite number
What are the factors of 0.7?
The concept of factors makes sense in the context of whole numbers. In the context of other numbers, every number is divisible by every non-zero number.
What is a number greater than one with more than two factors?
Every number greater than 1 has 1 and the number itself as factors. If it has no other factors besides these two factors, it is a prime number. If it has more factors than 1 and itself, it is a composite number.
Will every key created by multiplying two prime numbers together have this number of factors?
Every product of two prime numbers has four factors.
Why is 52 A composite number?
52 is a composite number because it has factors in addition to (52 & 1). If a number has only the two factors (itself and 1) then it is prime. Every whole number greater than 1 will have at least those two factors. The number 1 has only one factor (1). Numbers that have more than two factors are called composite numbers.
What 2 numbers goes into every number?
1 and the number itself. They are factors of every number. ex. 1 and 2 are factors of 2. Just as 1 and 71 are factors of 71.
