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Q: The greatest prime number less than 20?

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47 is the greatest prime number under 50.

29

89.

It is: 47

The greatest number that is less than 30 is 29.Becuase the only prime numbers that are less then 100 are:2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,59,61,67,71,73,79,83,89 and 97.So as you seen the greatest number that is less than 30 is 29.

Related questions

the greatest prime number less than 200 is 199

47 is the greatest prime number less than 48.

The greatest prime number less than 200 is 199.

The greatest prime number less than 20 is 19. For there to be a difference, we'll have to have another value.

47 is the greatest prime number under 50.

The greatest prime number less than 10 is 7. To have a difference, you need at least two values.

The smallest prime number is 2 and the greatest prime number less than 100 is 97. The required product is: 2 x 97 = 194.

293

29

19

19.

89.