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Can every prime number except 2 must be 1 more or 1 less than a multiple of 4?
Wiki User
∙ 12y ago
Every Prime number except 2 must be odd. This is because if it were even it would be divisible by 2 and so wouldn't be a prime number. The next point to note is that all odd numbers are one more or one less than a multiple of 4. Because 2 more than a multiple of 4 is even, and 3 more than a multiple of 4 is the same as 1 less than the multiple of 4 above. Thus every prime number except 2 must be 1 more or 1 less than a multiple of 4.
Wiki User
∙ 12y ago
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Is every multiple of seven a composite number?
Yes except 7 itself which is a prime number
Is 420 a prime number?
Every even number except 2 is composite (not prime).
What are the multiples of 2 in prime numbers?
No multiple of ' 2 ', except ' 2 ' itself, is a prime number.
When you add 1 to any prime number except 2 you get a number?
Every prime number except 2 is an odd number, so adding 1 to any prime number except 2 results in an even number.
Why can there never be a pair of consecutive prime numbers that are both prime?
If you mean consecutive numbers that are prime? than the answer is 2,3 are consecutive numbers which are prime. except for this pair it is impossible for consecutive numbers to be prime because every second number is multiple of 2
Is every multiple of seven a composite number?
Yes except 7 itself which is a prime number
Can a prime number be a multiple of any other number except it self?
Yes. A prime number is a multiple of 1.
Can a prime number be a multiple of any other except itself?
A prime number is a multiple of itself and one.
Can a prime number be a multiple of any other number except for itself?
No prime is a multiple of any number other than itself and one.
Is every multiple of 5 a composite number true or false?
is every multiple of five a composite number true or false
Is 420 a prime number?
Every even number except 2 is composite (not prime).
Is every multiple next to a multiple of six always a prime number?
no
Can a prime number be a multiple any other number except itself?
Yes. It is a multiple of 1.
What are the multiples of 2 in prime numbers?
No multiple of ' 2 ', except ' 2 ' itself, is a prime number.
When you add 1 to any prime number except 2 you get a number?
Every prime number except 2 is an odd number, so adding 1 to any prime number except 2 results in an even number.
How your prime number are odd or even?
Every prime number is odd except one: the number 2.
Does every number have a prime number in it?
Everything except zero and one.
