perplexus.info :: Numbers : The highest prime

The highest prime (Posted on 2014-05-16)

You are requested to partition the set of 10 digits (0,1,…,9) into a maximal number of subsets, such that in each set it is possible to create a prime number
using all its members.

What is the highest prime thus created?

See The Solution Submitted by Ady TZIDON

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Lucky 7

| Comment 4 of 8 |

Well, Jer and Tomarken interpreted this to mean that the prime had to be formed through digital concatenation. And, yes, I expect that is what the puzzle author probably meant to say.

But 6 is not maximal if other operations are allowed. For instance, here are 7 sets:

sqrt(9)

8/4

601

Posted by Steve Herman on 2014-05-16 11:30:33

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