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How far can you go? (Posted on 2011-03-04) Difficulty: 5 of 5
Starting with a prime digit add another digit, after or before the first, then another, adding it after, before or within the second number, and continue, keeping the resulting numbers prime, without repeating any of the digits you have used so far.

Example: 2, 23, 263, 2063, 29063....

Obviously you cannot reach a pandigital number (it will always be divisible by 9) .

What are the lowest and highest numbers in the set of eligible solutions with the maximum number of digits?

Please specify the interim stages leading to your results.

No Solution Yet Submitted by Ady TZIDON    
Rating: 4.0000 (3 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Some Thoughts re(2): Smarandache-Wellin numbers? Comment 11 of 11 |
(In reply to re: Smarandache-Wellin numbers? by brianjn)

I know it's not the same, I  just wanted to stress out

that I've never heard about S-W sequence prior to my post.


  Posted by Ady TZIDON on 2011-03-06 10:26:57
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