Use left and right arrows to move one number at a time, up and down arrows to jump by ten, Page Up and Page Down to jump by one hundred, Home and End to jump to the beginning or end, and Enter or Space to select numbers in quadratic mode.

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Prime Spiral Explorer

Number fields and curves

Walks the integers outward on a square spiral. Prime-rich diagonals often emerge clearly in this classic arrangement.

1..10,000

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Nature

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Prime Factors

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