91 (tal) Inden for videnskab | Se også | Eksterne links | Navigationsmenur
Bestemte tal
checksnaturlige tal9092
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91 (tal)
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| 91 | |
|---|---|
← 90 92 → | |
| Kardinaltal | 91 enoghalvfems |
| Ordinaltal | 91. enoghalvfemsindstyvende |
| Talsystem | Enoghalvfemstalssystemet |
| Faktoriseret | 7⋅13displaystyle 7cdot 13 |
| Divisorer | 1, 7, 13, 91 |
| Sum af divisorer | 112 |
| Romertal | XCI |
| Binærtal | 1011011 |
| Oktaltal | 133 |
| Dusinaltal | 77 |
| Hexadecimaltal | 5B |
| Øvrigt | Defektivt tal, ekstraordinært tal, heksagontal, kvadratfrit tal, pyramidetal, trekanttal |
91 (enoghalvfems, på checks også nitien) er det naturlige tal som kommer efter 90 og efterfølges af 92.
Inden for videnskab |
91 Aegina, asteroide
M91, spiralgalakse i Berenikes Lokker, Messiers katalog
Se også |
91 f.Kr. og 91 e.Kr. (år)- Tal
- Ciffer
Eksterne links |
Wikimedia Commons har flere filer relateret til 91 (tal)
Wikimedia Commons har flere filer relateret til 91 (tal) Kategori:
- Bestemte tal
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