73
73是72搭74之间个自然数。
- 第21个素数。前一个为71、下一个为79。
- 第56个亏数，真约数和为1，亏度为72。前一个为71、下一个为74。
- 六角星数。
- 钽个原子序数。
This article uses material from the Wikipedia 吴语 article 73, which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). 除非另外声明，内容用CC BY-SA 4.0授权。 Images, videos and audio are available under their respective licenses.
®Wikipedia is a registered trademark of the Wiki Foundation, Inc. Wiki 吴语 (DUHOCTRUNGQUOC.VN) is an independent company and has no affiliation with Wiki Foundation.