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Title: 139  
Author: World Heritage Encyclopedia
Language: English
Subject: 140, 138, 149, 148, (13188) Okinawa
Publisher: World Heritage Encyclopedia


수 목록 - 정수
<< 130 131 132 133 134 135 136 137 138 139 >>
<< 100 110 120 130 140 150 160 170 180 190 >>
읽는 법 백삼십구
세는 법 백서른아홉
한자 百三十九
소인수 분해 소수
로마 숫자 CXXXIX
2진수 1000 1011
8진수 213
12진수 B7
16진수 8B
수학적 성질
φ(139) = 138 σ*(139) = 140
d(139) = 2 σ(139) = 140
μ(139) = -1 M(139) = -4

139(백삼십구)는 138보다 크고 140보다 작은 자연수이다.


  • 34번째 소수이다. 앞의 소수는 137이고, 다음은 149이다.


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