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Prime numbers are numbers whose only divisors are one and
itself. For example, 31 is a prime number because its only divisors are 1
and 31. However, 12 is not a prime number because it can be divided by 1,
2, 3, 4, 6, or 12.
There are NO PRIME NUMBERS among those 9-digit numbers that can be formed by
rearranging the digits in the number:
Any number whose digits sum up to a number divisible by 3 is
divisible by 3. The above number has this property, and therefore any
number formed by
rearranging the digits of this number is divisible by 3 and therefore not a
prime number.
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