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Prime numbers
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03-24-2016, 01:23 PM
Post: #8
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RE: Prime numbers
(03-24-2016 11:59 AM)Tugdual Wrote: studying the digits of a number seem pointless to me. But consider the number 27412317. Can you tell if it is prime by looking at the digits? Yes! The sum of the digits is divisible by 3, which makes the number divisible by 3, which makes it non-prime. A number is nothing without its digits! |
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| Messages In This Thread |
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Prime numbers - Tugdual - 03-22-2016, 07:49 PM
RE: Prime numbers - Valentin Albillo - 03-23-2016, 10:46 PM
RE: Prime numbers - Massimo Gnerucci - 03-23-2016, 11:17 PM
RE: Prime numbers - Valentin Albillo - 03-24-2016, 07:17 PM
RE: Prime numbers - Vtile - 03-23-2016, 11:51 PM
RE: Prime numbers - brouhaha - 03-24-2016, 07:15 AM
RE: Prime numbers - Paul Dale - 03-24-2016, 08:07 AM
RE: Prime numbers - Tugdual - 03-24-2016, 11:59 AM
RE: Prime numbers - Don Shepherd - 03-24-2016 01:23 PM
RE: Prime numbers - Tugdual - 03-24-2016, 07:51 PM
RE: Prime numbers - emece67 - 03-25-2016, 12:24 PM
RE: Prime numbers - Tugdual - 03-25-2016, 07:29 PM
RE: Prime numbers - Claudio L. - 03-25-2016, 12:41 PM
RE: Prime numbers - Didier Lachieze - 03-25-2016, 01:07 PM
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