Deficient number

From Simple English Wikipedia, the free encyclopedia

A deficient number is when a number is not a perfect number or a abundant number. Also some primes, prime powers, and any divisors of a perfect or deficient number are deficient. 1 is deficient along with 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 21, 22, 23, etc.[1][2][3]

References[change | change source]

  1. ↑ Weisstein, Eric W. "Deficient Number". mathworld.wolfram.com. Retrieved 2024-03-06.
  2. ↑ "What is a Deficient Number ? Definition and Examples". Basic-mathematics.com. Retrieved 2024-03-06.
  3. ↑ "The Prime Glossary: deficient number". t5k.org. Retrieved 2024-03-06.
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