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
To Victor Zapana
The special number is 53
the numbers not divisible by any number <20 should be prime and greater than 20
The numbers are 23,29,31,37,41,43,47,53,59,61 and so on.
The least number with avg of digits as a +ve integer between 3 and 9 (4,6,8) is 53