Number
179
- Positive
- Odd
- Prime
- 3 digits
179 is an odd 3-digit integer and a prime number. It has 2 divisors and a digital root of 8.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityPrime
Absolute value179
Digit count3
Digit sum17
Digital root8repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation179
Distinct prime factors1179
Number of divisors2
Sum of divisors σ(n)180
Aliquot sum1sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)178integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 1792 in total
Arithmetic
Representations
Decimal179
Binary101100118 bits
Octal263
HexadecimalB3
Base 364Z
Roman numeralCLXXIX
In wordsone hundred and seventy-nine
Ordinalone hundred and seventy-ninth
Scientific notation1.79 × 10^2
Engineering notation179
Nearest landmarks
Powers & multiples
179 to the power 232,041
179 to the power 35,735,339
179 to the power 41,026,625,681
179 to the power 5183,765,996,899
First ten multiples179, 358, 537, 716, 895, 1,074, 1,253, 1,432, 1,611, 1,790
Powers of twoBetween 2^7 (128) and 2^8 (256)
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 4
Divisible by 8No, remainder 3
Divisible by 9No, remainder 8
Divisible by 10No, remainder 9
Divisible by 11No, remainder 3
Divisible by 12No, remainder 11
Divisible by 100No, remainder 79
Collatz (3n + 1) trajectory
Steps to reach 131the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps179 → 538 → 269 → 808 → 404 → 202 → 101 → 304 → 152 → 76 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage17,900%
179% as a decimal1.79
179% of 100179
179% of 1,0001,790
As a fraction of 100179/100
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Derived from 179
Other readings
Also reads as
#117799 (colour)
- #117799
- Cyan
- Dark
- Nearest: Steel blue
#117799 is a cyan with RGB values 17, 119, 153 and HSL 195°, 80%, 33%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.
Colour values
#117799#117799
HEX#117799
HEX (short)#179
RGBrgb(17, 119, 153)
RGB (0–1)0.0667, 0.4667, 0.6
RGB percentages6.7%, 46.7%, 60%
HSLhsl(195, 80%, 33.3%)
HSV / HSBhsv(195, 88.9%, 60%)
CMYK88.9%, 22.2%, 0%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,144,729
CSS custom property--colour: #117799;
Brightness & contrast
Relative luminance0.15613WCAG 2.x, 0 is black and 1 is white
Perceived brightness105.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.09:1
Contrast with white5.09:1WCAG normal text: AA
Contrast with black4.12:1WCAG normal text: Fail
Greyscale equivalent#646464
Inverted#EE8866
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.09:1WCAG large text: AAA
Contrast with black, large text4.12:1WCAG large text: AA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#993311
Analogous#119977, #113399
Triadic#991177, #779911
Split complementary#991133, #997711
Tetradic#771199, #993311, #339911
Tints, shades & saturation
Channel breakdown
R17
G119
B153
Red17 (6.7%)
Green119 (46.7%)
Blue153 (60%)
Hue195°
Saturation (HSL)80%
Lightness33.33%
Dominant channelBlue
Hex per channelR 11 · G 77 · B 99
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Harmonies
Similar named colours
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