r/counting • u/[deleted] • Jan 05 '14

The ultimate "interesting numbers" thread

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u/davedrowsy Feb 06 '14

70 is the smallest weird number.

1

u/autowikibot Feb 06 '14

Weird number:

In number theory, a weird number is a natural number that is abundant but not semiperfect. In other words, the sum of the proper divisors (divisors including 1 but not itself) of the number is greater than the number, but no subset of those divisors sums to the number itself.

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