The Number

1001

One Thousand and One

In Base 21 Unovigesimal Is

25e21

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

For more familiar numbers: See One Thousand and One in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

998
25b21
Nine Hundred and Ninety-Eight in Base 21 Unovigesimal
999
25c21
Nine Hundred and Ninety-Nine in Base 21 Unovigesimal
1000
25d21
One Thousand in Base 21 Unovigesimal
1002
25f21
One Thousand and Two in Base 21 Unovigesimal
1003
25g21
One Thousand and Three in Base 21 Unovigesimal
1004
25h21
One Thousand and Four in Base 21 Unovigesimal

Scientific Notation

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

1.001e3

Reciprocal

A number multiplied with its reciprocal is one.

0.00956095609560921

The reciprocal of 1001 in Base 21 Unovigesimal.

Palindrome?

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

The number 25e21 is not a palindrome.

Not A Prime Number

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

One thousand and one 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 thousand and one 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 thousand and one has the following 3 prime factors:

7
721
Seven in Base 21 Unovigesimal
11
b21
Eleven in Base 21 Unovigesimal
13
d21
Thirteen 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 · b211 · d211 = 25e21

Base Conversions

The number one thousand and one in 35 different bases