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The magic Number (Posted on 2004-03-17)

Whats the smallest number ("the magic number") that can satisfy these conditions?

- its positive

- it is not divisible by any number below 20 (excluding 1)

- the average of the digits is an even number between 3 and 9

See The Solution Submitted by Victor Zapana

Rating: 3.3333 (9 votes)

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| Comment 31 of 35 |

53
positive
prime
5+3 = 8/2=4

31 doesn't work because 3+1=4/2=2 which is not between 3 and 9

53 it is :D

Posted by mike on 2004-05-11 19:07:16

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