The Number

209

Two Hundred and Nine

In Base 21 Unovigesimal Is

9k21

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

For more familiar numbers: See Two Hundred and Nine in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

206
9h21
Two Hundred and Six in Base 21 Unovigesimal
207
9i21
Two Hundred and Seven in Base 21 Unovigesimal
208
9j21
Two Hundred and Eight in Base 21 Unovigesimal
210
a021
Two Hundred and Ten in Base 21 Unovigesimal
211
a121
Two Hundred and Eleven in Base 21 Unovigesimal
212
a221
Two Hundred and Twelve in Base 21 Unovigesimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

2.09e2

Reciprocal

A number multiplied with its reciprocal is one.

0.0226b34ajkiiea21

The reciprocal of 209 in Base 21 Unovigesimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 9k21 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Two hundred and nine is a composite number with 4 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Two hundred and nine is a composite number with 4 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number two hundred and nine has the following 2 prime factors:

11
b21
Eleven in Base 21 Unovigesimal
19
j21
Nineteen in Base 21 Unovigesimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

b211 · j211 = 9k21

Base Conversions

The number two hundred and nine in 35 different bases