The Number

138509

One Hundred and Thirty-Eight Thousand Five Hundred and Nine

In Base 8 Octal Is

4164158

The numbers with a 8 subscript use Base 8 Octal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

138506
4164128
One Hundred and Thirty-Eight Thousand Five Hundred and Six in Base 8 Octal
138507
4164138
One Hundred and Thirty-Eight Thousand Five Hundred and Seven in Base 8 Octal
138508
4164148
One Hundred and Thirty-Eight Thousand Five Hundred and Eight in Base 8 Octal
138510
4164168
One Hundred and Thirty-Eight Thousand Five Hundred and Ten in Base 8 Octal
138511
4164178
One Hundred and Thirty-Eight Thousand Five Hundred and Eleven in Base 8 Octal
138512
4164208
One Hundred and Thirty-Eight Thousand Five Hundred and Twelve in Base 8 Octal

Scientific Notation

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

1.38509e5

Reciprocal

A number multiplied with its reciprocal is one.

0.00000171101121062030068

The reciprocal of 138509 in Base 8 Octal.

Palindrome?

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

The number 4164158 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 thirty-eight thousand five hundred and nine is a composite number with 8 total factors (including 1 and itself).   See primes in Base 8 Octal

A Composite

Composites have more than just these two factors.

One hundred and thirty-eight thousand five 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 thirty-eight thousand five hundred and nine has the following 3 prime factors:

7
78
Seven in Base 8 Octal
47
578
Forty-Seven in Base 8 Octal
421
6458
Four Hundred and Twenty-One in Base 8 Octal

Prime Factorization

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

781 · 5781 · 64581 = 4164158

Base Conversions

The number one hundred and thirty-eight thousand five hundred and nine in 35 different bases