The Number
81421
Eighty-One Thousand Four Hundred and Twenty-One
In Base 15 Quindecimal Is
191d115
The numbers with a 15 subscript use Base 15 Quindecimal notation.
For more familiar numbers: See Eighty-One Thousand Four Hundred and Twenty-One in Base 10 Decimal
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.
8.1421e4
Reciprocal
A number multiplied with its reciprocal is one.
0.000094d704ee25562615
The reciprocal of 81421 in Base 15 Quindecimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 191d115 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 four hundred and twenty-one is the 7967th prime number. See primes in Base 15 Quindecimal
Not A Composite
Composites have more than just these two factors.
Eighty-One Thousand Four Hundred and Twenty-One is not a composite number because it has exactly two factors: One and Eighty-One Thousand Four Hundred and Twenty-One
Prime Factors
The number eighty-one thousand four hundred and twenty-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
191d1151
= 191d115
Base Conversions
The number eighty-one thousand four hundred and twenty-one in 35 different bases