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One.
By definition numbers are:
- prime if they have only 2 distinct factors (namely 1 and the number itself);
- composite if they have 3 or more distinct factors
The important thing to note is the word distinct. The number 1 has only 1 distinct factor, namely 1; thus it is neither a prime (the first Prime number is 2) nor composite.
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Is seven composite or prime?
Seven is prime because the only factor for seven is one and itself ,so thats wat makes it prime.
Is 2 or 8 prime numbers?
A prime number is a number thats only factors are 1 and itself. So find the factors of 2. They are 1, and 2. So 2 is prime. A composite number is a number that has more than a pair of factors. So find the factors of 8. They are 1, and 8. They are 2, and 4. 8 has more than 1 pair of factors. So it is composite
What are the prime numbers between 11 to 40?
13,17,19,23,29,31,37 thats it.
What is a two-digit prime number between 15 and 40?
THATS SOOO EASY!!!! there 17, 19, 23, 27, 29, 31, 37, use your brain! :)
Are 21 28 15 17 and 28 prime numbers?
theres only one even prime number, thats 2 prime numbers can only be divided by themselves, and 1 21, divisible by 3 or 7, so no 28 even number other than 2, so no 15, divisible by 3 or 5, so no 17 divisible only by itself and 1, so yes 28, even number, other than 2, so no
