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April 16th, 2017, 09:02 AM   #1
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Can anyone here factor 100 numbers and spot all primes in 20 MINUTES?

Can anyone here factor 100 numbers and spot all primes in 20 MINUITS?....Grade 4 students are currently doing it now I can show u the simple manual method...If u wish..If not that's cool
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April 16th, 2017, 10:18 AM   #2
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April 17th, 2017, 02:11 PM   #3
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Originally Posted by ashesmi View Post
Can anyone here factor 100 numbers and spot all primes in 20 MINUITS?....Grade 4 students are currently doing it now I can show u the simple manual method...If u wish..If not that's cool
I could probably do it on a computer with between 10 and 20 lines of code using 4th grade mathematics.

-Dan
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April 17th, 2017, 03:08 PM   #4
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I should think it very much depends on the size and quantity of the factors. I'm certain I could do numbers less than 200 in under 20 minutes, probably also numbers less than 1000. Numbers of the order of $10^200$ would probably defeat me, even if the factors were quite small.

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May 4th, 2017, 10:16 AM   #5
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Originally Posted by v8archie View Post
I should think it very much depends on the size and quantity of the factors. I'm certain I could do numbers less than 200 in under 20 minutes, probably also numbers less than 1000. Numbers of the order of $10^200$ would probably defeat me, even if the factors were quite small.
Here is the solution https://m.youtube.com/watch?v=K9gKZNAWZ9M
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May 4th, 2017, 10:17 AM   #6
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I could probably do it on a computer with between 10 and 20 lines of code using 4th grade mathematics.

-Dan
Here is that solution https://m.youtube.com/watch?v=K9gKZNAWZ9M
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May 4th, 2017, 10:17 AM   #7
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Here is the solution https://m.youtube.com/watch?v=K9gKZNAWZ9M
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