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253
 
259 is a composite number.
A positive integer greater than 1 that is not prime is called composite.
upload_2015-12-1_8-27-0.webp
 
261 is a deficient number because the sum of all
its positive divisors except itself is less than 261.

261
 
265 is another deficient number because the sum of
all its positive divisors except itself is less than 265.

265
 
267 is the smallest number n such that n plus a googol is prime.
267 is another one of those Deficient numbers, which means that
the sum of all its positive divisors except itself is less than 267.

267
 
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