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Q: What number is prime is less than 19 and the sum of digits is greater than 7?

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Prime number greater than 25 but less than 30 is 29.

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47 is the prime number greater than 43 and less than 52.

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23 or 41

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It could be 97 which is a prime number.

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Ummm... If I am correctly interpreting the question to be asking for a prime number less than 19, whose digits added together are greater than 7, then the answer is 17. There really aren't many options here (1, 2, 3, 5, 7, 11, 13, 17), only three of which even have multiple digits (11, 13, 17). So... 177. qed?

The four numbers are: 113, 131, 151 and 191. For the product of the digits to be prime, the number must contain 2 ones - which greatly simplifies the exercise.

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I am 87 .

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The new prime number, 2 multiplied by itself 57,885,161times, less one, has 17,425,170 digits.

There is no "the" prime number in that range - there are 21 of them. If you want "the" prime number you will need to be more specific.

27 is the prime number and also 41.

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0.123 is greater. Even though 0.1002 has more digits the placement makes the number much less.

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