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Count to 1,000

T293_logoTwitter.jpg
 
294 is an abundant number because
the sum of all its positive divisors except itself
is more than 294.

294
 
296 is a deficient number because the sum of all its
positive divisors except itself is less than 296.


WB296.jpg
 
309 is the smallest number whose fifth power is pandigital.
A number is pandigital if it contains all digits from 0 to 9.
309 to the fifth power = 2817036000549. Since 309 raised
to the fifth power contains each digit from zero to nine at
least once, 309 is a pandigital number.

309
 
311 is a twin prime number.
313 is the twin of 311.
A number is a twin prime if there is
another prime number differing from it by 2.

311
 
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