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▷ ▶ Prime or Composite Number? SelectSmart.com free Education flowcharts and decision trees.
Prime or Composite Number?
A SelectSmart.com Flowchart by vcammel. See vcammel's 4me blog page.
Viewed 1300 times. Created March 2015.

Information and items from Amazon.com you may find helpful. This SelectSmart.com Education flowchart, a free online decision tool is a creation of vcammel and Education for amusement purposes only. The implicit and explicit opinions expressed here are the author's. SelectSmart.com does not necessarily agree.
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How to tell if a number is Prime or Composite

                 
Is the number even (ends in 0, 2, 4, 6 or 8)
NO
Is the number divisible by 3 (add the digits of the number - if sum is a multiple of 3 then ...)
NO
Is the number divisible by 5 (ends in 0 or 5)
NO
Is the number divisible by 7 (do the math)
NO
The number is Prime (can only be multiplied by itself and 1)

YES


YES


YES


YES


The number is Composite
The number is Composite
The number is Composite
The number is Composite