Number
148
- Positive
- Even
- Composite
- 3 digits
148 is an even 3-digit integer and a composite number. It has 6 divisors and a digital root of 4.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value148
Digit count3
Digit sum13
Digital root4repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2^2 × 37
Distinct prime factors22, 37
Number of divisors6
Sum of divisors σ(n)266
Aliquot sum118sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)72integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 4, 37, 74, 1486 in total
Arithmetic
Representations
Decimal148
Binary100101008 bits
Octal224
Hexadecimal94
Base 3644
Roman numeralCXLVIII
In wordsone hundred and forty-eight
Ordinalone hundred and forty-eighth
Scientific notation1.48 × 10^2
Engineering notation148
Nearest landmarks
Powers & multiples
148 to the power 221,904
148 to the power 33,241,792
148 to the power 4479,785,216
148 to the power 571,008,211,968
First ten multiples148, 296, 444, 592, 740, 888, 1,036, 1,184, 1,332, 1,480
Powers of twoBetween 2^7 (128) and 2^8 (256)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 1
Divisible by 4Yes
Divisible by 5No, remainder 3
Divisible by 6No, remainder 4
Divisible by 7No, remainder 1
Divisible by 8No, remainder 4
Divisible by 9No, remainder 4
Divisible by 10No, remainder 8
Divisible by 11No, remainder 5
Divisible by 12No, remainder 4
Divisible by 100No, remainder 48
Collatz (3n + 1) trajectory
Steps to reach 123the total stopping time
Highest value reached148
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps148 → 74 → 37 → 112 → 56 → 28 → 14 → 7 → 22 → 11 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage14,800%
148% as a decimal1.48
148% of 100148
148% of 1,0001,480
As a fraction of 100148/100
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Derived from 148
Other readings
Also reads as
#114488 (colour)
- #114488
- Blue
- Dark
- Nearest: Dark slateblue
#114488 is a blue with RGB values 17, 68, 136 and HSL 214°, 78%, 30%. It is a dark colour, so white text on it reaches 9.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.
Colour values
#114488#114488
HEX#114488
HEX (short)#148
RGBrgb(17, 68, 136)
RGB (0–1)0.0667, 0.2667, 0.5333
RGB percentages6.7%, 26.7%, 53.3%
HSLhsl(214.3, 77.8%, 30%)
HSV / HSBhsv(214.3, 87.5%, 53.3%)
CMYK87.5%, 50%, 0%, 46.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,131,656
CSS custom property--colour: #114488;
Brightness & contrast
Relative luminance0.06031WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.52:1
Contrast with white9.52:1WCAG normal text: AAA
Contrast with black2.21:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#EEBB77
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.52:1WCAG large text: AAA
Contrast with black, large text2.21:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#885511
Analogous#118088, #191188
Triadic#881144, #448811
Split complementary#881911, #808811
Tetradic#881180, #885511, #118819
Tints, shades & saturation
Channel breakdown
R17
G68
B136
Red17 (6.7%)
Green68 (26.7%)
Blue136 (53.3%)
Hue214.29°
Saturation (HSL)77.78%
Lightness30%
Dominant channelBlue
Hex per channelR 11 · G 44 · B 88
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Harmonies
Similar named colours
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