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#1 2005-07-03 05:11:16

archie
Member
Registered: 2005-07-03
Posts: 2

Prime number difficulty

I was wondering if anyone could assist me in this problem.


what is the smallest 5-digit prime number whose digits are all unique?

Your help is greatly appreciated smile

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#2 2005-07-03 05:17:18

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

Re: Prime number difficulty

You're in luck!
Thanks to:
http://www.mathsisfun.com/forum/viewtopic.php?id=964

I recently made a prime number thingy on Excel, so I can now quickly check and tell you that the answer is...

10243.


Why did the vector cross the road?
It wanted to be normal.

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