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"Fractions to Make an Egyptian Scribe Blanch," by Dana Mackenzie.Science, 10 October 1997, page 224.

To represent a number as an "Egyptian fraction" is to write it as the sum offractions where all the numerators are 1 and all the denominators aredifferent. For example, 2/17 = 1/12 + 1/51 + 1/68 is an Egyptian fractionrepresentation of 2/17. Number theorists have been examining the question ofwhen whole numbers can be written as Egyptian fractions. This articledescribes some recent results on this question.

--- Allyn Jackson