Everything that has 0 as its digit can be divided by both 2, and 5 as well as many more. Therefore it cannot be a Prime number.
97A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 97 is the largest 2 digit prime number.
That is because primality is not defined for 0. Any larger number ending in 0 is divisible by 10 and so cannot be prime.
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A prime number is evenly divisible only by itself and one. Any three digit number ending in 0, 2, 4, 6, or 8 is evenly divisible by 2 - so not a prime Any three digit number ending in 5 is divisible by 5, so not a prime number. The only even prime number is 2. The only prime number that ends in 5 is 5.
679 is the product of the largest single-digit prime number and the largest two-digit prime number.
97A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 97 is the largest 2 digit prime number.
If two of the prime factors are 2 and 5, the last digit of the number will be zero.
2005The ones digit is 5.If the ones digit is 5 or 0 then it is divisible by5.NOT a prime.
That is because primality is not defined for 0. Any larger number ending in 0 is divisible by 10 and so cannot be prime.
If one digit is a prime number, that digit must be 2, 3, 5, or 7. If one digit is a square, that digit must be 1, 4, or 9. If one digit is neither a prime number or a square, that digit must be 0, 6, or 8. So, 248 is a possible number. Another possibility is 436. There are other possibilities, as well.
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A three digit number ending with 4 and 0 is obviously divisible by 2, so that leaves only 1 for the last digit. The first digit can't be 0 (that would leave us with "41" - well, that one is prime in any case), so the remaining option is 401. That one is a prime number.
A prime number is evenly divisible only by itself and one. Any three digit number ending in 0, 2, 4, 6, or 8 is evenly divisible by 2 - so not a prime Any three digit number ending in 5 is divisible by 5, so not a prime number. The only even prime number is 2. The only prime number that ends in 5 is 5.
9797 is the largest two digit prime number.
The number 50 is composite. Any two-digit (or more-digit) number that ends in zero can be divided evenly by 10 (and 5 and 2, for that matter). That means no two- or more-digit number ending in 0 can be prime.
No even number is a prime number - except 2. If the last digit is 0, 2, 4, 6, or 8, the number is divisible by 2, and therefore not a prime number.
679 is the product of the largest single-digit prime number and the largest two-digit prime number.