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73

72 ← 73 → 74
읽는 법칠십삼
세는 법일흔셋
한자七十三
소인수 분해소수
로마 숫자LXXIII
2진수10010012
3진수22013
4진수10214
5진수2435
6진수2016
8진수1118
12진수6112
16진수4916
20진수3D20
36진수2136
φ(73)72
σ*(73)74
d(73)2
σ(73)74
μ(73)-1
M(73)-4
수 목록 · 정수

73(칠십삼)은 72보다 크고 74보다 작은 자연수이다.

수학

[편집]
  • 21번째 소수이다. 앞의 소수는 71이고, 다음 소수는 79이다.
  • 2진법으로 나타내면 1001001이다.
  • 셸던 소수이다. 73은 21번째 소수이고 73을 뒤집은 37은 12번째 소수이다.
  • 제곱수의 합이다. (9+64)

과학

[편집]

기타

[편집]
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73
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