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  • 1 # 使用者6771047005830

    這是1000以內的質數表:

    2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,

    53,59,61,67,71,73,79,83,89,97,

    101,103,107,109,113,127,131,137,139,149,

    151,157,163,167,173,179,181,191,193,197,199,

    211,223,227,229,233,239,241,

    251,257,263,269,271,277,281,283,293,

    307,311,313,317,331,337,347,349,

    353,359,367,373,379,383,389,397,

    401,409,419,421,431,433,439,443,449,

    457,461,463,467,479,487,491,499,

    503,509,521,523,541,547,

    557,563,569,571,577,587,593,599,

    601,607,613,617,619,631,641,643,647,

    653,659,661,673,677,683,691,

    701,709,719,727,733,739,743,

    751,757,761,769,773,787,797,

    809,811,821,823,827,829,839,

    853,857,859,863,877,881,883,887,

    907,911,919,929,937,941,947,

    953,967,971,977,983,991,997

    總共168個

    823在其中,

    所以,823是質數.

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