The Number
81001
Eighty-One Thousand and One
Nearby Numbers
Positive, nonzero integers within three units
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.
0.000012345526598437056
The reciprocal of 81001.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 81001 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 10 Decimal
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 number eighty-one thousand and one has the following 1 prime factor:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
810011
= 81001
Base Conversions
The number eighty-one thousand and one in 35 different bases