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prime number

noun
🔊/ˌpraɪm ˈnʌmbə(r)/
🔊/ˌpraɪm ˈnʌmbər/
(also prime)
(mathematics数学)
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  1. a number that can be divided exactly only by itself and 1, for example 7, 17 and 41素数，质数（只能被 1 和其自身整除）Topics Maths and measurementc2