The Number

1999

One Thousand Nine Hundred and Ninety-Nine

In Base 11 Undecimal Is

155811

The numbers with a 11 subscript use Base 11 Undecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

1996
155511
One Thousand Nine Hundred and Ninety-Six in Base 11 Undecimal
1997
155611
One Thousand Nine Hundred and Ninety-Seven in Base 11 Undecimal
1998
155711
One Thousand Nine Hundred and Ninety-Eight in Base 11 Undecimal
2000
155911
Two Thousand in Base 11 Undecimal
2001
155a11
Two Thousand and One in Base 11 Undecimal
2002
156011
Two Thousand and Two in Base 11 Undecimal

Scientific Notation

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

1.999e3

Reciprocal

A number multiplied with its reciprocal is one.

0.000736250699a5545611

The reciprocal of 1999 in Base 11 Undecimal.

Palindrome?

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

The number 155811 is not a palindrome.

A Prime Number

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

One thousand nine hundred and ninety-nine is the 303rd prime number.   See primes in Base 11 Undecimal

Not A Composite

Composites have more than just these two factors.

One Thousand Nine Hundred and Ninety-Nine is not a composite number because it has exactly two factors: One and One Thousand Nine Hundred and Ninety-Nine

Prime Factors

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

The number one thousand nine hundred and ninety-nine has the following 1 prime factor:

1999
155811
One Thousand Nine Hundred and Ninety-Nine in Base 11 Undecimal

Prime Factorization

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

1558111 = 155811

Base Conversions

The number one thousand nine hundred and ninety-nine in 35 different bases