prime number
US /praɪm ˈnʌm.bɚ/
UK /praɪm ˈnʌm.bə/
名詞
素数
a whole number greater than 1 that cannot be exactly divided by any whole number other than itself and 1
例:
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The number 7 is a prime number because it is only divisible by 1 and 7.
7は1と7でしか割り切れないので素数です。
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Mathematicians are still searching for the largest known prime number.
数学者たちは今でも最大の既知の素数を探しています。