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Number

1,000

  • Positive
  • Even
  • Composite
  • Perfect cube
  • 4 digits

1,000 is an even 4-digit integer and a composite number. It has 16 divisors and a digital root of 1.

The canonical address for this page is /1000.

Number properties

ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value1,000
Digit count4
Digit sum1
Digital root1repeated digit sum
PalindromicNoreads differently backwards
Perfect cubeYes, 10³
Happy numberYessquared-digit sums reach 1
Harshad numberYesdivisible by its own digit sum

Factors & divisors

Prime factorisation2^3 × 5^3
Distinct prime factors22, 5
Number of divisors16
Sum of divisors σ(n)2,340
Aliquot sum1,340sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)400integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1,00016 in total

Arithmetic

Previous number999
Next number1,001
Double2,000
Half500
Square1,000,000
Cube1,000,000,000
Square root31.622776602≈irrational, shown to 9 decimal places
Cube root10
Negation-1,000
Reciprocal0.001≈
1,000 factorial4023872600770937735437024339230039857193… (2,568 digits)

Representations

Decimal1,000
Binary111110100010 bits
Octal1750
Hexadecimal3E8
Base 36RS
Roman numeralM
In wordsone thousand
Ordinalone thousandth
Scientific notation1 × 10^3
Engineering notation1 × 10^3

Nearest landmarks

Next prime1,009+9
Previous prime997−3
Distance to nearest prime3
Nearest square below961
Nearest square above1,024

Powers & multiples

1,000 to the power 21,000,000
1,000 to the power 31,000,000,000
1,000 to the power 41,000,000,000,000
1,000 to the power 51,000,000,000,000,000
First ten multiples1,000, 2,000, 3,000, 4,000, 5,000, 6,000, 7,000, 8,000, 9,000, 10,000
Powers of twoBetween 2^9 (512) and 2^10 (1,024)

Divisibility tests

Divisible by 2Yes
Divisible by 3No, remainder 1
Divisible by 4Yes
Divisible by 5Yes
Divisible by 6No, remainder 4
Divisible by 7No, remainder 6
Divisible by 8Yes
Divisible by 9No, remainder 1
Divisible by 10Yes
Divisible by 11No, remainder 10
Divisible by 12No, remainder 4
Divisible by 100Yes

Collatz (3n + 1) trajectory

Steps to reach 1111the total stopping time
Highest value reached9,2329× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps1,000 → 500 → 250 → 125 → 376 → 188 → 94 → 47 → 142 → 71 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage100,000%
1,000% as a decimal10
1,000% of 1001,000
1,000% of 1,00010,000
As a fraction of 1001,000/100

Read another way

As seconds16 minutes and 40 seconds
As bytes1,000 B
As a year1000 AD
As a 24-bit colour#0003E8

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Neighbouring numbers

Nearby primes

Also reads as

#001000 (colour)

  • #001000
  • Green
  • Dark
  • Nearest: Black

#001000 is a green with RGB values 0, 16, 0 and HSL 120°, 100%, 3%. It is a dark colour, so white text on it reaches 19.6:1 contrast (AAA for normal text). The nearest named colour is Black.

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Colour values

#001000#001000
HEX#001000
RGBrgb(0, 16, 0)
RGB (0–1)0, 0.0627, 0
RGB percentages0%, 6.3%, 0%
HSLhsl(120, 100%, 3.1%)
HSV / HSBhsv(120, 100%, 6.3%)
CMYK100%, 0%, 100%, 93.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,096
CSS custom property--colour: #001000;

Brightness & contrast

Relative luminance0.00371WCAG 2.x, 0 is black and 1 is white
Perceived brightness12.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.55:1
Contrast with white19.55:1WCAG normal text: AAA
Contrast with black1.07:1WCAG normal text: Fail
Greyscale equivalent#0B0B0B
Inverted#FFEFFF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#110D00no red cones; affects about 1% of men; ΔE 6.4 from the original
Deuteranopia#0E0B01no green cones; the most common form, about 1% of men; ΔE 6.4 from the original
Tritanopia#000F0Cno blue cones; rare, and affects men and women equally; ΔE 5.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.55:1WCAG large text: AAA
Contrast with black, large text1.07:1WCAG large text: Fail

Named colours

Black · ΔE 9Dark slate grey · ΔE 29.6Dim grey · ΔE 41.9Dark olivegreen · ΔE 48.1Gray · ΔE 50.9Teal · ΔE 51.8
Nearest named CSS colourBlack (#000000)ΔE 9.05, clearly different but related
Hue familygreen
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#100010
Analogous#081000, #001008
Triadic#000010, #100000
Split complementary#080010, #100008
Tetradic#000810, #100010, #100800

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#00DC00
Lighter +30%#00A900
Lighter +20%#007600
Lighter +10%#004300
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001000
Less saturated −25%#020E02

Channel breakdown

R0
G16
B0
Red0 (0%)
Green16 (6.3%)
Blue0 (0%)
Hue120°
Saturation (HSL)100%
Lightness3.14%
Dominant channelGreen
Hex per channelR 00 · G 10 · B 00

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Every value on this page was computed from “001000” by Nerdulator’s number engine. Nothing here was retrieved from a database of answers or written by a model.

This page is marked noindex: duplicate of /1000.