The Number

2561

Two Thousand Five Hundred and Sixty-One

In Base 8 Octal Is

50018

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

For more familiar numbers: See Two Thousand Five Hundred and Sixty-One in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

2558
47768
Two Thousand Five Hundred and Fifty-Eight in Base 8 Octal
2559
47778
Two Thousand Five Hundred and Fifty-Nine in Base 8 Octal
2560
50008
Two Thousand Five Hundred and Sixty in Base 8 Octal
2562
50028
Two Thousand Five Hundred and Sixty-Two in Base 8 Octal
2563
50038
Two Thousand Five Hundred and Sixty-Three in Base 8 Octal
2564
50048
Two Thousand Five Hundred and Sixty-Four in Base 8 Octal

Scientific Notation

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

2.561e3

Reciprocal

A number multiplied with its reciprocal is one.

0.0001462702477363234118

The reciprocal of 2561 in Base 8 Octal.

Palindrome?

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

The number 50018 is not a palindrome.

Not A Prime Number

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

Two thousand five hundred and sixty-one is a composite number with 4 total factors (including 1 and itself).   See primes in Base 8 Octal

A Composite

Composites have more than just these two factors.

Two thousand five hundred and sixty-one 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 thousand five hundred and sixty-one has the following 2 prime factors:

13
158
Thirteen in Base 8 Octal
197
3058
One Hundred and Ninety-Seven in Base 8 Octal

Prime Factorization

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

1581 · 30581 = 50018

Base Conversions

The number two thousand five hundred and sixty-one in 35 different bases