Sikkert primtal: Forskelle mellem versioner
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Linje 1:
Tallet 2p + 1 kaldes for et '''sikker primtal''' hvis p er et primtal, og omvendt er p et [[Sophie Germain primtal]].
De første sikre primtal er:
: [[5 (tal)|5]], [[7 (tal)|7]], [[11 (tal)|11]], [[23 (tal)|23]], [[47 (tal)|47]], [[59 (tal)|59]], [[83 (tal)|83]], [[107 (tal)|107]], [[167 (tal)|167]], [[179 (tal)|179]], [[227 (tal)|227]], [[263 (tal)|263]], 347, 359, 383, 467, 479, 503, 563, 587, 719, 839, 863, 887, 983, 1019, 1187, 1283, 1307, 1319, 1367, 1439, 1487, 1523, 1619, 1823, 1907, ...<ref>[https://oeis.org/A005385 A005385 -OEIS]</ref>
== Reference ==
{{Reflist}}
[[Kategori:Primtal]]
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