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150 (number)

From Wikipedia, the free encyclopedia
Natural number
← 149150 151 →
Cardinalone hundred fifty
Ordinal150th
(one hundred fiftieth)
Factorization2 × 3 × 52
Divisors1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150
Greek numeralΡΝ´
Roman numeralCL,cl
Binary100101102
Ternary121203
Senary4106
Octal2268
Duodecimal10612
Hexadecimal9616

150 (one hundred [and] fifty) is thenatural number following149 and preceding151.

In mathematics

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  • 150 is the sum of eight consecutive primes (7 + 11 + 13 + 17 + 19 + 23 + 29 + 31). Given 150, theMertens function returns0.[1]
  • 150 is conjectured to be the only minimal difference greater than 1 of any increasing arithmetic progression of n primes (in this case, n = 7) that is not aprimorial (a product of the first m primes).[2]
  • The sum ofEuler's totient function φ(x) over the first twenty-two integers is 150.
  • 150 is aHarshad number and anabundant number.
  • 150 degrees is the measure of the internal angle of a regulardodecagon.

In other fields

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150 is also:

References

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  1. ^"Sloane's A028442 : Numbers n such that Mertens' function is zero".The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved2016-05-28.
  2. ^"Sloane's A123556: Minimal difference of any increasing arithmetic progression of n primes".The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved2021-06-30.
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