130 (number)

From Wikipedia, the free encyclopedia
← 129 130 131 →
130 131 132 133 134 135 136 137 138 139
List of numbersIntegers
0 100 200 300 400 500 600 700 800 900
Cardinalone hundred thirty
Ordinal130th
(one hundred thirtieth)
Factorization2 × 5 × 13
Divisors1, 2, 5, 10, 13, 26, 65, 130
Greek numeralΡΛ´
Roman numeralCXXX
Binary100000102
Ternary112113
Octal2028
DuodecimalAA12
Hexadecimal8216

130 (one hundred [and] thirty) is the natural number following 129 and preceding 131.

In mathematics[]

130 is a sphenic number. It is a noncototient since there is no answer to the equation x - φ(x) = 130.

130 is the only integer that is the sum of the squares of its first four divisors, including 1: 12 + 22 + 52 + 102 = 130.

130 is the largest number that cannot be written as the sum of four hexagonal numbers.[1]

130 equals both 27 + 2 and 53 + 5 and is therefore a doubly strictly adsurd number.[2][unreliable source?]

In religion[]

The Book of Genesis states Adam had Seth at the age of 130. The Second Book of Chronicles says that Jehoiada died at the age of 130.[3]

In other fields[]

One hundred [and] thirty is also:

  • The year AD 130 or 130 BC
  • The 130 nanometer process is a semiconductor process technology by semiconductor companies
  • A 130-30 fund or a ratio up to 150/50 is a type of collective investment vehicle
  • The C130 Hercules aircraft

References[]

  1. ^ MathWorld - Hexagonal Number
  2. ^ Mackenzie, Dana (2018). "2184: An Absurd (and Adsurd) Tale". Integers. 18.
  3. ^ 2 Chronicles 24:15

See also[]

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