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OpenStudy (anonymous):
Are any of these numbers prime: 8157 8257 8357 8457 8557 8657 8757 8857 8957? Medal if answered CORRECTLY.
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OpenStudy (paki):
8157 is divisible by 3 too... so not a prime number.... 8257 is divisible by 23 too... so not a prime.... so the numbers are not really prime...
OpenStudy (raden):
you can check one by one on wolfram :) this is just for the 3rd one : http://www.wolframalpha.com/input/?i=is%208357%20prime%3F&lk=2
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