Equal prime and composite sums: Difference between revisions
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Primes up to 390180569 at position 20840220 and composites up to 91491160 at position 86192660 sum to 3950430820867201.
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=={{header|J}}==
Brute force seems fast enough for this task
<lang J>Pn=: +/\ pn=: p: i.1e6 NB. first million primes pn and their running sum Pn
Cn=: +/\(4+i.{:pn)-.pn NB. running sum of composites starting at 4 and excluding those primes
both=: Pn(e.#[)Cn NB. numbers in both sequences
both,.(Pn i.both),.Cn i.both NB. values, Pn index m, Cn index n
10 2 1
1988 32 50
14697 79 146
83292 174 360
1503397 659 1581
18859052 2142 5698
93952013 4555 12820
89171409882 118784 403340</lang>
=={{header|jq}}==
{{works with|jq}}
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