The Number
128991
One Hundred and Twenty-Eight Thousand Nine Hundred and Ninety-One
In Base 21 Unovigesimal Is
dja921
The numbers with a 21 subscript use Base 21 Unovigesimal notation.
For more familiar numbers: See One Hundred and Twenty-Eight Thousand Nine Hundred and Ninety-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.
1.28991e5
Reciprocal
A number multiplied with its reciprocal is one.
0.0001adiij5c7iec421
The reciprocal of 128991 in Base 21 Unovigesimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number dja921 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
One hundred and twenty-eight thousand nine hundred and ninety-one is a composite number with 16 total factors (including 1 and itself). See primes in Base 21 Unovigesimal
A Composite
Composites have more than just these two factors.
One hundred and twenty-eight thousand nine hundred and ninety-one is a composite number with 16 total factors (including 1 and itself).
Prime Factors
The number one hundred and twenty-eight thousand nine hundred and ninety-one has the following 4 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
3211
·
j211
·
1a211
·
3a211
= dja921
Base Conversions
The number one hundred and twenty-eight thousand nine hundred and ninety-one in 35 different bases