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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Request for clarification

| Comment 1 of 8

What methods are permitted in creating a prime number from individual digits?

Addition and Subtraction? (ie, 6 - 4 = 2)

Multiplication and Division? (ie, 6/3 = 2)

Other Mathematical operations/ (ie, 3!-1 = 5)

Concatenation? (ie, 1 9 = 19)

Posted by Steve Herman on 2014-05-16 10:27:15

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