Number
299
- Positive
- Odd
- Composite
- 3 digits
299 is an odd 3-digit integer and a composite number. It has 4 divisors and a digital root of 2.
The canonical address for this page is /299.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value299
Digit count3
Digit sum20
Digital root2repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation13 × 23
Distinct prime factors213, 23
Number of divisors4
Sum of divisors σ(n)336
Aliquot sum37sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)264integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 13, 23, 2994 in total
Arithmetic
Representations
Decimal299
Binary1001010119 bits
Octal453
Hexadecimal12B
Base 368B
Roman numeralCCXCIX
In wordstwo hundred and ninety-nine
Ordinaltwo hundred and ninety-ninth
Scientific notation2.99 × 10^2
Engineering notation299
Nearest landmarks
Powers & multiples
299 to the power 289,401
299 to the power 326,730,899
299 to the power 47,992,538,801
299 to the power 52,389,769,101,499
First ten multiples299, 598, 897, 1,196, 1,495, 1,794, 2,093, 2,392, 2,691, 2,990
Powers of twoBetween 2^8 (256) and 2^9 (512)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 2
Divisible by 4No, remainder 3
Divisible by 5No, remainder 4
Divisible by 6No, remainder 5
Divisible by 7No, remainder 5
Divisible by 8No, remainder 3
Divisible by 9No, remainder 2
Divisible by 10No, remainder 9
Divisible by 11No, remainder 2
Divisible by 12No, remainder 11
Divisible by 100No, remainder 99
Collatz (3n + 1) trajectory
Steps to reach 1117the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps299 → 898 → 449 → 1,348 → 674 → 337 → 1,012 → 506 → 253 → 760 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage29,900%
299% as a decimal2.99
299% of 100299
299% of 1,0002,990
As a fraction of 100299/100
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Derived from 299
Other readings
Also reads as
#000299 (colour)
- #000299
- Blue
- Dark
- Nearest: Dark blue
#000299 is a blue with RGB values 0, 2, 153 and HSL 239°, 100%, 30%. It is a dark colour, so white text on it reaches 14.3:1 contrast (AAA for normal text). The nearest named colour is Dark blue.
Colour values
#000299#000299
HEX#000299
RGBrgb(0, 2, 153)
RGB (0–1)0, 0.0078, 0.6
RGB percentages0%, 0.8%, 60%
HSLhsl(239.2, 100%, 30%)
HSV / HSBhsv(239.2, 100%, 60%)
CMYK100%, 98.7%, 0%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer665
CSS custom property--colour: #000299;
Brightness & contrast
Relative luminance0.02343WCAG 2.x, 0 is black and 1 is white
Perceived brightness51.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.3:1
Contrast with white14.3:1WCAG normal text: AAA
Contrast with black1.47:1WCAG normal text: Fail
Greyscale equivalent#0C0C0C
Inverted#FFFD66
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text14.3:1WCAG large text: AAA
Contrast with black, large text1.47:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#999700
Analogous#004E99, #4B0099
Triadic#990002, #029900
Split complementary#994B00, #4E9900
Tetradic#99004E, #999700, #00994B
Tints, shades & saturation
Channel breakdown
R0
G2
B153
Red0 (0%)
Green2 (0.8%)
Blue153 (60%)
Hue239.22°
Saturation (HSL)100%
Lightness30%
Dominant channelBlue
Hex per channelR 00 · G 02 · B 99
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