Crossword Genius

Fundamental (5)

Ross

(Other definitions for prime that I've seen before include "Maybe eleven" , "Number such as two, three, five, seven, etc" , "Prepare for use, say a pump" , "Main; make usable" , "Capital - of first importance" .)

I've seen this clue in The Irish Times, the LA Times, the Evening Standard, The Independent, the Sydney Morning Herald, the Newsday, The Telegraph, The Times, The Mirror, The Star Tribune and the King Feature Syndicate.
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