The Number
665
Six Hundred and Sixty-Five
In Base 13 Tridecimal Is
3c213
The numbers with a 13 subscript use Base 13 Tridecimal notation.
For more familiar numbers: See Six Hundred and Sixty-Five 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.
6.65e2
Reciprocal
A number multiplied with its reciprocal is one.
0.0033c44897a1b860813
The reciprocal of 665 in Base 13 Tridecimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 3c213 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Six hundred and sixty-five is a composite number with 8 total factors (including 1 and itself). See primes in Base 13 Tridecimal
A Composite
Composites have more than just these two factors.
Six hundred and sixty-five is a composite number with 8 total factors (including 1 and itself).
Prime Factors
The number six hundred and sixty-five 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
5131
·
7131
·
16131
= 3c213
Base Conversions
The number six hundred and sixty-five in 35 different bases