Why if n=4, the answer is 204

Posted by

plague 28 Mar 2008 16:06

Explain me please, why if n=4, the answer is 204.

I get 2513.

Re: Why if n=4, the answer is 204

Posted by

Stefan 23 May 2008 15:22

1031 is not a THREE-PRIME nummber.

103 is THREE-PRIME nummber,

but

031 isn't, it's TWO-PRIME number

Re: Why if n=4, the answer is 204

Thank you for question and answers. It help to understand the task.