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

Question

22-07-2017
Mathematics

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

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koziadam koziadam · Answer 1 · 2017-07-22T00:22:10+02:00

koziadam koziadam

22-07-2017

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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