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Comments on Puzzle #24580: Prime numbers
By Thomas Genuine (Genuine)

peek at solution       solve puzzle
  version: 2    quality:   difficulty:   solvability: line & color logic only  

Puzzle Description:

This is NOT a picture but an idea. Red: Prime numbers (2 factors) Black: Power numbers (squares, cubes etc.) White: two prime factors, both are single Blue: more than two prime factors (each one is single) Green: has got power number (>1) as factor Attention! There are 3 colour mistakes (solvabilty!) Where are they? :)

#1: Web Paint-By-Number Robot (webpbn) on Jun 1, 2014

New version published by Genuine.
#2: Kurt Kowalczyk (bahabro) on Jun 1, 2014
cool idea!

you said 3 color mistakes, and I've found 3 fairly quickly so I'm not going to keep looking....r19,c14 should be white(34-factor of 2 primes). r18,c14 should be green(54-has factor of 9 which is a cube). r18,c15 should be white(55-factor of 2 primes)
#3: Thomas Genuine (Genuine) on Jun 1, 2014
thx Kurt!
(Maybe more mistakes?) :)
#4: Thomas Genuine (Genuine) on Jun 1, 2014
OK Kurt, originally I meant changing of 54-55 is ONE mistake! :)
There is another one. Let it to other solvers! :)
#5: Cynthia Lynn McDaniel (mcaardva) on Jun 15, 2016
My head hurts.
#6: Andrew Schultz (blurglecruncheon) on Sep 15, 2019 [HINT] [SPOILER]
I wrote a python script to figure this out.

209 = 11 * 19 and should be white but is listed as blue.
185 = 5 * 37 and should be white but is listed as green.
65 = 5 * 13 and should be white but is listed as blue.

In addition to the 54/55 flip and 34 listed above.

Goto next topic

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