The Number

19987

Nineteen Thousand Nine Hundred and Eighty-Seven

In Base 5 Quinary Is

11144225

The numbers with a 5 subscript use Base 5 Quinary notation.

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

Nearby Numbers

Positive, nonzero integers within three units

19984
11144145
Nineteen Thousand Nine Hundred and Eighty-Four in Base 5 Quinary
19985
11144205
Nineteen Thousand Nine Hundred and Eighty-Five in Base 5 Quinary
19986
11144215
Nineteen Thousand Nine Hundred and Eighty-Six in Base 5 Quinary
19988
11144235
Nineteen Thousand Nine Hundred and Eighty-Eight in Base 5 Quinary
19989
11144245
Nineteen Thousand Nine Hundred and Eighty-Nine in Base 5 Quinary
19990
11144305
Nineteen Thousand Nine Hundred and Ninety in Base 5 Quinary

Scientific Notation

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

1.9987e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000000342324441141242231403425

The reciprocal of 19987 in Base 5 Quinary.

Palindrome?

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

The number 11144225 is not a palindrome.

Not A Prime Number

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

Nineteen thousand nine hundred and eighty-seven is a composite number with 8 total factors (including 1 and itself).   See primes in Base 5 Quinary

A Composite

Composites have more than just these two factors.

Nineteen thousand nine hundred and eighty-seven 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 nineteen thousand nine hundred and eighty-seven has the following 3 prime factors:

11
215
Eleven in Base 5 Quinary
23
435
Twenty-Three in Base 5 Quinary
79
3045
Seventy-Nine in Base 5 Quinary

Prime Factorization

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

2151 · 4351 · 30451 = 11144225

Base Conversions

The number nineteen thousand nine hundred and eighty-seven in 35 different bases