Find prime numbers of the form n*n*n+2: Difference between revisions
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(Created page with "{{Draft task}} ;Task: Find prime numbers of form <big> n<sup>''3''</sup>+2</big>, where 0 < n < 200 <br> =={{header|Ring}}== <lang ring> load "stdlib.ring" see...") |
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pr = pow(n,3)+2 |
pr = pow(n,3)+2 |
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if isprime(pr) |
if isprime(pr) |
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see "n: " + n + " n*n*n+ |
see "n: " + n + " n*n*n+2 : " + pr + nl |
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ok |
ok |
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next |
next |
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<pre> |
<pre> |
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working... |
working... |
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n: 1 n*n*n+ |
n: 1 n*n*n+2 : 3 |
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n: 3 n*n*n+ |
n: 3 n*n*n+2 : 29 |
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n: 5 n*n*n+ |
n: 5 n*n*n+2 : 127 |
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n: 29 n*n*n+ |
n: 29 n*n*n+2 : 24391 |
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n: 45 n*n*n+ |
n: 45 n*n*n+2 : 91127 |
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n: 63 n*n*n+ |
n: 63 n*n*n+2 : 250049 |
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n: 65 n*n*n+ |
n: 65 n*n*n+2 : 274627 |
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n: 69 n*n*n+ |
n: 69 n*n*n+2 : 328511 |
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n: 71 n*n*n+ |
n: 71 n*n*n+2 : 357913 |
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n: 83 n*n*n+ |
n: 83 n*n*n+2 : 571789 |
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n: 105 n*n*n+ |
n: 105 n*n*n+2 : 1157627 |
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n: 113 n*n*n+ |
n: 113 n*n*n+2 : 1442899 |
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n: 123 n*n*n+ |
n: 123 n*n*n+2 : 1860869 |
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n: 129 n*n*n+ |
n: 129 n*n*n+2 : 2146691 |
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n: 143 n*n*n+ |
n: 143 n*n*n+2 : 2924209 |
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n: 153 n*n*n+ |
n: 153 n*n*n+2 : 3581579 |
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n: 171 n*n*n+ |
n: 171 n*n*n+2 : 5000213 |
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n: 173 n*n*n+ |
n: 173 n*n*n+2 : 5177719 |
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n: 189 n*n*n+ |
n: 189 n*n*n+2 : 6751271 |
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done... |
done... |
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</pre> |
</pre> |
Revision as of 13:35, 15 March 2021
Find prime numbers of the form n*n*n+2 is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.
- Task
- Find prime numbers of form n3+2, where 0 < n < 200
Ring
<lang ring> load "stdlib.ring"
see "working..." + nl
for n = 1 to 200
pr = pow(n,3)+2 if isprime(pr) see "n: " + n + " n*n*n+2 : " + pr + nl ok
next
see "done..." + nl </lang>
- Output:
working... n: 1 n*n*n+2 : 3 n: 3 n*n*n+2 : 29 n: 5 n*n*n+2 : 127 n: 29 n*n*n+2 : 24391 n: 45 n*n*n+2 : 91127 n: 63 n*n*n+2 : 250049 n: 65 n*n*n+2 : 274627 n: 69 n*n*n+2 : 328511 n: 71 n*n*n+2 : 357913 n: 83 n*n*n+2 : 571789 n: 105 n*n*n+2 : 1157627 n: 113 n*n*n+2 : 1442899 n: 123 n*n*n+2 : 1860869 n: 129 n*n*n+2 : 2146691 n: 143 n*n*n+2 : 2924209 n: 153 n*n*n+2 : 3581579 n: 171 n*n*n+2 : 5000213 n: 173 n*n*n+2 : 5177719 n: 189 n*n*n+2 : 6751271 done...