Recognised as Decimal number
2 × 10^19
- Positive
- Decimal
- 0 d.p.
- Exact fraction
- 3 s.f.
2 × 10^19 is a decimal number equal to 20,000,000,000,000,000,000⁄1. It lies between 20,000,000,000,000,000,000 and 20,000,000,000,000,000,000, and as a percentage it is 2 × 10^21%.
Number properties
Absolute value2 × 10^19
SignPositive
Integer part20,000,000,000,000,000,000
Fractional part0
Decimal places0
Ceiling20,000,000,000,000,000,000
Rounded to nearest20,000,000,000,000,000,000
Truncated20,000,000,000,000,000,000
Fractions & ratios
Ratio20,000,000,000,000,000,000 : 1
As a percentage2 × 10^21%
Reciprocal5 × 10^-20≈
Arithmetic
Double4 × 10^19
Half1 × 10^19
Square4 × 10^38
Cube8 × 10^57
Square root4,472,135,954.99958≈
Cube root2,714,417.61659491≈
Negation-2 × 10^19
Natural logarithm44.4422639474≈
Logarithm base 1019.3010299957≈
Representations
Decimal2 × 10^19
Scientific notation2 × 10^19
Exponential2e+19
IEEE 754 binary64 (hex)0x43F158E460913D00the exact 64-bit pattern stored
IEEE 754 binary32 (hex)0x5F8AC72332-bit single precision, may lose accuracy
Rounding & precision
Significant figures as written3counted from the digits as typed, not from the value
To 0 decimal places20000000000000000000
To 1 decimal place20000000000000000000.0
To 2 decimal places20000000000000000000.00
To 3 decimal places20000000000000000000.000
To 4 decimal places20000000000000000000.0000
To 1 significant figure2e+19
To 2 significant figures2e+19
To 3 significant figures2e+19
To 4 significant figures2e+19
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Neighbouring values
As a fraction
Also reads as
#200E17 (colour)
- #200E17
- Red
- Dark
- Nearest: Black
#200E17 is a red with RGB values 32, 14, 23 and HSL 330°, 39%, 9%. It is a dark colour, so white text on it reaches 18.5:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#200E17#200E17
HEX#200E17
RGBrgb(32, 14, 23)
RGB (0–1)0.1255, 0.0549, 0.0902
RGB percentages12.5%, 5.5%, 9%
HSLhsl(330, 39.1%, 9%)
HSV / HSBhsv(330, 56.3%, 12.5%)
CMYK0%, 56.2%, 28.1%, 87.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,100,759
CSS custom property--colour: #200E17;
Brightness & contrast
Relative luminance0.00683WCAG 2.x, 0 is black and 1 is white
Perceived brightness21.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.48:1
Contrast with white18.48:1WCAG normal text: AAA
Contrast with black1.14:1WCAG normal text: Fail
Greyscale equivalent#121212
Inverted#DFF1E8
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.48:1WCAG large text: AAA
Contrast with black, large text1.14:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0E2017
Analogous#200E20, #200E0E
Triadic#17200E, #0E1720
Split complementary#0E200E, #0E2020
Tetradic#20200E, #0E2017, #0E0E20
Tints, shades & saturation
Channel breakdown
R32
G14
B23
Red32 (12.5%)
Green14 (5.5%)
Blue23 (9%)
Hue330°
Saturation (HSL)39.13%
Lightness9.02%
Dominant channelRed
Hex per channelR 20 · G 0E · B 17
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