The Number
2
Two
In Base 19 Nonadecimal Is
219
The numbers with a 19 subscript use Base 19 Nonadecimal notation.
For more familiar numbers: See Two 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.
2e0
Reciprocal
A number multiplied with its reciprocal is one.
0.999999999999a19
The reciprocal of 2 in Base 19 Nonadecimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 219 is a palindrome.
A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Two is the 1st prime number. See primes in Base 19 Nonadecimal
Not A Composite
Composites have more than just these two factors.
Two is not a composite number because it has exactly two factors: One and Two
Prime Factors
The number two 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
2191
= 219
Base Conversions
The number two in 35 different bases