800 (angka): Perbedaan antara revisi
Konten dihapus Konten ditambahkan
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Baris 33:
* 817 = 19 × 43, jumlah tiga bilangan prima berurutan (269 + 271 + 277), [[centered hexagonal number|bilangan heksagonal berpusat]]<ref>{{Cite OEIS|A003215|Hex (or centered hexagonal) numbers|accessdate=2016-06-11}}</ref>
* 818 = 2 × 409, nontotient, bilangan strobogrammatika<ref name=":0" />
* 819 = 3<sup>2</sup> × 7 × 13,
=== 820-an ===
Baris 108:
* 870 = 2 × 3 × 5 × 29, jumlah sepuluh bilangan prima (67 + 71 + 73 + 79 + 83 + 89 + 97 + 101 + 103 + 107), bilangan pronik,<ref name=":1" /> nontotient, sparsely totient number,<ref name=":6" /> bilangan Harshad
** Jumlah ini adalah [[magic constant|magic constant]] ''n''×''n'' normal
* 871 = 13 × 67
* 872 = 2<sup>3</sup> × 109, nontotient
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