The Number

19991

Nineteen Thousand Nine Hundred and Ninety-One

In Base 19 Nonadecimal Is

2h7319

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

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

Nearby Numbers

Positive, nonzero integers within three units

19988
2h7019
Nineteen Thousand Nine Hundred and Eighty-Eight in Base 19 Nonadecimal
19989
2h7119
Nineteen Thousand Nine Hundred and Eighty-Nine in Base 19 Nonadecimal
19990
2h7219
Nineteen Thousand Nine Hundred and Ninety in Base 19 Nonadecimal
19992
2h7419
Nineteen Thousand Nine Hundred and Ninety-Two in Base 19 Nonadecimal
19993
2h7519
Nineteen Thousand Nine Hundred and Ninety-Three in Base 19 Nonadecimal
19994
2h7619
Nineteen Thousand Nine Hundred and Ninety-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.

1.9991e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00069g6d8bidgh2819

The reciprocal of 19991 in Base 19 Nonadecimal.

Palindrome?

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

The number 2h7319 is not a palindrome.

A Prime Number

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

Nineteen thousand nine hundred and ninety-one is the 2260th prime number.   See primes in Base 19 Nonadecimal

Not A Composite

Composites have more than just these two factors.

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

Prime Factors

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

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

19991
2h7319
Nineteen Thousand Nine Hundred and Ninety-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

2h73191 = 2h7319

Base Conversions

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