Number
801,001
- Positive
- Odd
- Prime
- 6 digits
801,001 is an odd 6-digit integer and a prime number. It has 2 divisors and a digital root of 1.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityPrime
Absolute value801,001
Digit count6
Digit sum10
Digital root1repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation801,001
Distinct prime factors1801,001
Number of divisors2
Sum of divisors σ(n)801,002
Aliquot sum1sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)801,000integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 801,0012 in total
Arithmetic
Representations
Decimal801,001
Binary1100001110001110100120 bits
Octal3034351
HexadecimalC38E9
Base 36H621
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordseight hundred and one thousand and one
Ordinaleight hundred and one thousand and first
Scientific notation8.01001 × 10^5
Engineering notation801.001 × 10^3
Nearest landmarks
Powers & multiples
801,001 to the power 2641,602,602,001
801,001 to the power 3513,924,325,805,403,001
801,001 to the power 4411,653,898,894,453,609,204,001
801,001 to the power 5329,735,184,668,356,235,426,014,005,001
First ten multiples801,001, 1,602,002, 2,403,003, 3,204,004, 4,005,005, 4,806,006, 5,607,007, 6,408,008, 7,209,009, 8,010,010
Powers of twoBetween 2^19 (524,288) and 2^20 (1,048,576)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 1
Divisible by 5No, remainder 1
Divisible by 6No, remainder 1
Divisible by 7No, remainder 5
Divisible by 8No, remainder 1
Divisible by 9No, remainder 1
Divisible by 10No, remainder 1
Divisible by 11No, remainder 3
Divisible by 12No, remainder 1
Divisible by 100No, remainder 1
Collatz (3n + 1) trajectory
Steps to reach 1237the total stopping time
Highest value reached6,082,6127× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps801,001 → 2,403,004 → 1,201,502 → 600,751 → 1,802,254 → 901,127 → 2,703,382 → 1,351,691 → 4,055,074 → 2,027,537 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage80,100,100%
801,001% as a decimal8,010.01
801,001% of 100801,001
801,001% of 1,0008,010,010
As a fraction of 100801,001/100
Read another way
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Derived from 801,001
Also reads as
#801001 (colour)
- #801001
- Red
- Dark
- Nearest: Maroon
#801001 is a red with RGB values 128, 16, 1 and HSL 7°, 98%, 25%. It is a dark colour, so white text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Maroon.
Colour values
#801001#801001
HEX#801001
RGBrgb(128, 16, 1)
RGB (0–1)0.502, 0.0627, 0.0039
RGB percentages50.2%, 6.3%, 0.4%
HSLhsl(7.1, 98.4%, 25.3%)
HSV / HSBhsv(7.1, 99.2%, 50.2%)
CMYK0%, 87.5%, 99.2%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,392,705
CSS custom property--colour: #801001;
Brightness & contrast
Relative luminance0.04962WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.54:1
Contrast with white10.54:1WCAG normal text: AAA
Contrast with black1.99:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#7FEFFE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.54:1WCAG large text: AAA
Contrast with black, large text1.99:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#017180
Analogous#800132, #804F01
Triadic#018010, #100180
Split complementary#01804F, #013280
Tetradic#328001, #017180, #4F0180
Tints, shades & saturation
Channel breakdown
R128
G16
B1
Red128 (50.2%)
Green16 (6.3%)
Blue1 (0.4%)
Hue7.09°
Saturation (HSL)98.45%
Lightness25.29%
Dominant channelRed
Hex per channelR 80 · G 10 · B 01
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