The Number
81390
Eighty-One Thousand Three Hundred and Ninety
In Base 12 Duodecimal Is
3b12612
The numbers with a 12 subscript use Base 12 Duodecimal notation.
For more familiar numbers: See Eighty-One Thousand Three Hundred and Ninety 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.
8.1390e4
Reciprocal
A number multiplied with its reciprocal is one.
0.00003082b905614451b612
The reciprocal of 81390 in Base 12 Duodecimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 3b12612 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Eighty-one thousand three hundred and ninety is a composite number with 16 total factors (including 1 and itself). See primes in Base 12 Duodecimal
A Composite
Composites have more than just these two factors.
Eighty-one thousand three hundred and ninety is a composite number with 16 total factors (including 1 and itself).
Prime Factors
The number eighty-one thousand three hundred and ninety 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
2121
·
3121
·
5121
·
16a1121
= 3b12612
Base Conversions
The number eighty-one thousand three hundred and ninety in 35 different bases