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11 November, 11:01

Which of the following is not a prime number 263, 1057, 3163, or 157

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  1. 11 November, 14:36
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    This is why the internet was invented so lets use an online math calculator.

    Prime means that the only factors are 1 and itself.

    Woah look at what I found!

    263 is prime

    1057 isn't? oh wow. 7 * 151

    3163 is prime

    157 is prime

    So it is 1057 oh wow
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