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197

196 ← 197 → 198
읽는 법백구십칠
세는 법백아흔일곱
한자百九十七
소인수 분해소수
로마 숫자CXCVII
2진수110001012
3진수210223
4진수30114
5진수12425
6진수5256
8진수3058
12진수14512
16진수C516
20진수9H20
36진수5H36
φ(197)196
σ*(197)198
d(197)2
σ(197)198
μ(197)-1
M(197)-7
수 목록 · 정수

197(백구십칠)은 196보다 크고 198보다 작은 자연수이다.

수학

[편집]
  • 45번째 소수이다. 앞의 소수는 193이고, 다음은 199이다.
  • 다음 소수의 합과 같다.(2+3+5+7+11+13+17+19+23+29+31+37)

과학

[편집]
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기타

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197
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