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PROJECT EULER · #0333

Special Partitions

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All positive integers can be partitioned in such a way that each and every term of the partition can be expressed as 2i×3j, where i,j0.

Let's consider only such partitions where none of the terms can divide any of the other terms.
For example, the partition of 17=2+6+9=(21×30+21×31+20×32) would not be valid since 2 can divide 6. Neither would the partition 17=16+1=(24×30+20×30) since 1 can divide 16. The only valid partition of 17 would be 8+9=(23×30+20×32).

Many integers have more than one valid partition, the first being 11 having the following two partitions.
11=2+9=(21×30+20×32)
11=8+3=(23×30+20×31)

Let's define P(n) as the number of valid partitions of n. For example, P(11)=2.

Let's consider only the prime integers q which would have a single valid partition such as P(17).

The sum of the primes q<100 such that P(q)=1 equals 233.

Find the sum of the primes q<1000000 such that P(q)=1.

Write-up coming later

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