インテジャーズ

INTEGERS

数、特に整数に関する記事。

もし1分以内に8を見つけられたら、あなたは天才!

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&9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 \\
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&9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 \\
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9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 \\ &
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9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 \\ &
9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 \\ &
9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 \\ &
9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 \\ &
9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 \\ &
9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 \\ &
9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 \\ &
9999999999 9999999999 9999999999 9999999999 9999999999 99\end{align}



Aさん 「2を見つけた」


Bさん 「8を見つけた」


Cさん 「これは素数だ」


Dさん 「これは各桁の総和が丁度10万となるような最小の素数だ」