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"Nine hundred and ninety-seven" is the largest oban (short for " 'o' banned ") prime since primes beyond it use the word "thousand(s)" and/or the suffix "-illion(s)" in their names. [Beedassy]


  Submitted: 2008-01-12 14:48:59;   Last Modified: 2008-01-30 11:28:00.

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