The Number
1815
One Thousand Eight Hundred and Fifteen
In Base 20 Vigesimal Is
4af20
The numbers with a 20 subscript use Base 20 Vigesimal notation.
For more familiar numbers: See One Thousand Eight Hundred and Fifteen 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.
1.815e3
Reciprocal
A number multiplied with its reciprocal is one.
0.004831e33i4ef6420
The reciprocal of 1815 in Base 20 Vigesimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 4af20 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
One thousand eight hundred and fifteen is a composite number with 12 total factors (including 1 and itself). See primes in Base 20 Vigesimal
A Composite
Composites have more than just these two factors.
One thousand eight hundred and fifteen is a composite number with 12 total factors (including 1 and itself).
Prime Factors
The number one thousand eight hundred and fifteen has the following 3 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
3201
·
5201
·
b202
= 4af20
Base Conversions
The number one thousand eight hundred and fifteen in 35 different bases