81 (alƙalami)

81 (tamanin da ɗaya) alƙalami ne, tsakanin 80 da 82.

← 80 81 82 →
← 80 81 82 83 84 85 86 87 88 89 → ← 0 10 20 30 40 50 60 70 80 90 →
Cardinal	tamanin-ɗaya
Factorization (en)	34
Greek numeral	ΠΑ´
Roman numeral	LXXXI
Binary	10100012
Ternary	100003
Octal (en)	1218
Duodecimal system (en)	6912
Hexadecimal (en)	5116