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141 (number)

FieldValue
number141
divisor1, 3, 47, 141

141 (one hundred [and] forty-one) is the natural number following 140 and preceding 142.

In mathematics

141 is:

  • a centered pentagonal number.
  • the sum of the sums of the divisors of the first 13 positive integers.
  • the second n to give a prime Cullen number (of the form n2n + 1).
  • an undulating number in base 10, with the previous being 131, and the next being 151.
  • the sixth hendecagonal (11-gonal) number.
  • a semiprime: a product of two prime numbers, namely 3 and 47. Since those prime factors are Gaussian primes, this means that 141 is a Blum integer.
  • a Hilbert prime

References

References

  1. "Sloane's A005891 : Centered pentagonal numbers". OEIS Foundation.
  2. {{Cite OEIS. A024916
  3. Wells, D. ''[[The Penguin Dictionary of Curious and Interesting Numbers]]'' London: Penguin Group. (1987): 139
  4. "Sloane's A051682 : 11-gonal (or hendecagonal) numbers". OEIS Foundation.
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