The Number
21005
Twenty-One Thousand and Five
In Base 2 Binary Is
1010010000011012
The numbers with a 2 subscript use Base 2 Binary notation.
For more familiar numbers: See Twenty-One Thousand and Five in Base 10 Decimal
Nearby Numbers
Positive, nonzero integers within three units
Scientific Notation
Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.
2.1005e4
Reciprocal
A number multiplied with its reciprocal is one.
0.00000000000000110001111010111001100100010110100011110010011110111112
The reciprocal of 21005 in Base 2 Binary.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 1010010000011012 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Twenty-one thousand and five is a composite number with 4 total factors (including 1 and itself). See primes in Base 2 Binary
A Composite
Composites have more than just these two factors.
Twenty-one thousand and five is a composite number with 4 total factors (including 1 and itself).
Prime Factors
The number twenty-one thousand and five has the following 2 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
10121
·
100000110100121
= 1010010000011012
Base Conversions
The number twenty-one thousand and five in 35 different bases