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bn:03113855n
Noun Concept
SYL
81
EN
81 is the natural number following 80 and preceding 82. Wikipedia
English:
number
Relations
Sources
IS A
EN
composite number
EN
natural number
EN
centered octagonal number
EN
square number
EN
heptagonal number
+1 relations
PRIME FACTOR
3
BabelNet
SYL
81

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