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We found 4 dictionaries that define the word unusual number:

General (1 matching dictionary)
  1. Unusual number: Wikipedia, the Free Encyclopedia

Science (3 matching dictionaries)
  1. Unusual Number: Eric Weisstein's World of Mathematics
  2. unusual number, Unusual number: PlanetMath Encyclopedia

Definitions from Wikipedia (Unusual number)

noun:  In number theory, an unusual number is a natural number n whose largest prime factor is strictly greater than .


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