The Number

2005

Two Thousand and Five

Nearby Numbers

Positive, nonzero integers within three units

2002
Two Thousand and Two
2003
Two Thousand and Three
2004
Two Thousand and Four
2006
Two Thousand and Six
2007
Two Thousand and Seven
2008
Two Thousand and Eight

Scientific Notation

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

2.005e3

Reciprocal

A number multiplied with its reciprocal is one.

0.0004987531172069825

The reciprocal of 2005.

Palindrome?

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

The number 2005 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 and five is a composite number with 4 total factors (including 1 and itself).   See primes in Base 10 Decimal

A Composite

Composites have more than just these two factors.

Two thousand and five 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 and five has the following 2 prime factors:

5
Five
401
Four Hundred and One

Prime Factorization

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

51 · 4011 = 2005

Base Conversions

The number two thousand and five in 35 different bases