If anyone need the 2000*2000 prime spiral, download it here

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I used 1 hour 26 minute and 48 seconds to generate this image, and I haven't find anyone online made one this big yet. If anyone found this useful, just download though the attachment.

UPDATE: Also include a 5000*5000 prime spiral created in 78.825353 seconds with my small optimization that make it 650 times faster.
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AttachmentSize
primespiral2000.png190.94 KB
primespiral5000.png1.09 MB

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