On 01/23/2012 10:31 PM, Marc Tompkins wrote:
On Mon, Jan 23, 2012 at 12:08 PM, Shreesh bhat<shreeshbha...@gmail.com>wrote:
No,i meant sum of digits is prime and also sum of square of digits is
prime.
E.g: 23 is lucky cos
2+3=>5 (prime)
2**2+3**2 => 4+9 => 13 (prime)
Thanks for the clarification - or I should say "correction", since "sum of
square of digits" and "square of sum of digits" are NOT equivalent!
But Shreesh' original wording was:
A number is called lucky if the sum of its digits, as well as the sum of
the squares of its digits is a prime number. How many numbers between A and
B are lucky?
in a message 1/22/12 at 1:11, subject: "Re: [Tutor] Tutor Digest, Vol
95, Issue 55"
That thread soon got renamed to "OverflowError in lucky numbers script"
--
DaveA
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