The Number

81001

Eighty-One Thousand and One

In Base 19 Nonadecimal Is

bf7419

The numbers with a 19 subscript use Base 19 Nonadecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

80998
bf7119
Eighty Thousand Nine Hundred and Ninety-Eight in Base 19 Nonadecimal
80999
bf7219
Eighty Thousand Nine Hundred and Ninety-Nine in Base 19 Nonadecimal
81000
bf7319
Eighty-One Thousand in Base 19 Nonadecimal
81002
bf7519
Eighty-One Thousand and Two in Base 19 Nonadecimal
81003
bf7619
Eighty-One Thousand and Three in Base 19 Nonadecimal
81004
bf7719
Eighty-One Thousand and Four in Base 19 Nonadecimal

Scientific Notation

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

8.1001e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0001baf60aad0hc119

The reciprocal of 81001 in Base 19 Nonadecimal.

Palindrome?

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

The number bf7419 is not a palindrome.

A Prime Number

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

Eighty-one thousand and one is the 7926th prime number.   See primes in Base 19 Nonadecimal

Not A Composite

Composites have more than just these two factors.

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

Prime Factors

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

The number eighty-one thousand and one has the following 1 prime factor:

81001
bf7419
Eighty-One Thousand and One in Base 19 Nonadecimal

Prime Factorization

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

bf74191 = bf7419

Base Conversions

The number eighty-one thousand and one in 35 different bases