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Of that group, 19 and 37 are prime.
Odd
Prime factorization never includes a composite number. All numbers in prime factorization must be prime numbers.
The factors of 30 and 60 include the prime numbers 2, 3, and 5.
odds
odds
Both. Because there are both even and odd prime numbers.
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Because evens can always be divided by 2
There are many, many more odd prime numbers than even prime numbers; there is only 1 even prime number, namely 2, whereas the odd prime numbers are 3, 5, 7, 11, ...
Odd. There is only 1 prime number in the even group: 2. This is because all even numbers above 2 have at least three factors: 1, 2, and itself. There are many odd prime numbers: 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 41, 43, 47, 53, 59...
Of that group, 19 and 37 are prime.
Odd
Prime factorization never includes a composite number. All numbers in prime factorization must be prime numbers.
A prime number has only 2 factors which are 1 and itself. There is no better group, but there are more odds.
6 and 9 are not prime numbers 23 is the only prime number in this group