The Number

123809

One Hundred and Twenty-Three Thousand Eight Hundred and Nine

In Base 21 Unovigesimal Is

d7fe21

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

For more familiar numbers: See One Hundred and Twenty-Three Thousand Eight Hundred and Nine in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

123806
d7fb21
One Hundred and Twenty-Three Thousand Eight Hundred and Six in Base 21 Unovigesimal
123807
d7fc21
One Hundred and Twenty-Three Thousand Eight Hundred and Seven in Base 21 Unovigesimal
123808
d7fd21
One Hundred and Twenty-Three Thousand Eight Hundred and Eight in Base 21 Unovigesimal
123810
d7ff21
One Hundred and Twenty-Three Thousand Eight Hundred and Ten in Base 21 Unovigesimal
123811
d7fg21
One Hundred and Twenty-Three Thousand Eight Hundred and Eleven in Base 21 Unovigesimal
123812
d7fh21
One Hundred and Twenty-Three Thousand Eight 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.

1.23809e5

Reciprocal

A number multiplied with its reciprocal is one.

0.0001bkf6ckc10b8721

The reciprocal of 123809 in Base 21 Unovigesimal.

Palindrome?

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

The number d7fe21 is not a palindrome.

Not A Prime Number

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

One hundred and twenty-three thousand eight hundred and nine is a composite number with 8 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

One hundred and twenty-three thousand eight hundred and nine is a composite number with 8 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 one hundred and twenty-three thousand eight hundred and nine has the following 3 prime factors:

7
721
Seven in Base 21 Unovigesimal
23
1221
Twenty-Three in Base 21 Unovigesimal
769
1fd21
Seven Hundred and Sixty-Nine in Base 21 Unovigesimal

Prime Factorization

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

7211 · 12211 · 1fd211 = d7fe21

Base Conversions

The number one hundred and twenty-three thousand eight hundred and nine in 35 different bases