Recognised as Number
-143
- Negative
- Odd
- 3 digits
-143 is an odd 3-digit integer and the negative of 143. It has 4 divisors and a digital root of 8.
Number properties
ParityOddnot divisible by 2
SignNegative
Absolute value143
Digit count3
Digit sum8
Digit product12
Multiplicative persistence2times the digit product can be taken before one digit is left
Digital root8repeated digit sum
PalindromicNoreads differently backwards
Factors & divisors
Prime factorisation−1 × 11 × 13
Distinct prime factors211, 13
Number of divisors4
Sum of divisors σ(n)168
SquarefreeYesno repeated prime factor
All divisors1, 11, 13, 1434 in total
Arithmetic
Representations
Decimal-143
Binary100011118 bits
Octal217
Hexadecimal8F
Base 363Z
In wordsminus one hundred and forty-three
Ordinalminus one hundred and forty-third
Scientific notation-1.43 × 10^2
Engineering notation-143
In other bases
Ternary12022base 3; the most digit-efficient integer base after e: 5 digits
Quinary1033base 5; one hand: 4 digits
Septenary263base 7: 3 digits
Nonary168base 9; each digit is two ternary digits: 3 digits
Duodecimalbbbase 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 2 digits
Vigesimal73base 20; hands and feet, and the Mayan and Yoruba systems: 2 digits
Sexagesimal2:23base 60; Babylonian, and still how an hour and a circle are divided: 2 digits
Balanced ternaryT11T01digits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary10110001base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
1111111101110001
Bit length8 bitsto write the magnitude
Set bits5the population count, or Hamming weight
Zero bits3within that length
Bit parityodd5 set bits, so odd; not the same as the number itself being odd
Highest set bitbit 7worth 128
Lowest set bitbit 00 trailing zeros
Power of twoNo
Bytes18f
Gray code11001000n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
16-bit1111111101110001two's complement
32-bit11111111111111111111111101110001two's complement
64-bit1111111111111111111111111111111111111111111111111111111101110001two's complement
One's complement0000000010001110at 16 bits, every bit flipped
Bits reversed1000111011111111at 16 bits
Rotated left by 11111111011100011at 16 bits, wrapping
Shifted left by 1-100011110= -286, no wrap
Shifted right by 1-1001000= -71, discarding the low bit
These bits as a double7.06513874 × 10^-322≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Powers & multiples
-143 to the power 220,449
-143 to the power 3-2,924,207
-143 to the power 4418,161,601
-143 to the power 5-59,797,108,943
First ten multiples-143, -286, -429, -572, -715, -858, -1,001, -1,144, -1,287, -1,430
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 3
Divisible by 6No, remainder 5
Divisible by 7No, remainder 3
Divisible by 8No, remainder 7
Divisible by 9No, remainder 8
Divisible by 10No, remainder 3
Divisible by 11Yes
Divisible by 12No, remainder 11
Divisible by 100No, remainder 43
As a percentage & fraction
As a percentage-14,300%
-143% as a decimal-1.43
-143% of 100-143
-143% of 1,000-1,430
As a fraction of 100-143/100
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