The Number
13721
Thirteen Thousand Seven Hundred and Twenty-One
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.
1.3721e4
Reciprocal
A number multiplied with its reciprocal is one.
0.00007288098535092194
The reciprocal of 13721.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 13721 is not a palindrome.
A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Thirteen thousand seven hundred and twenty-one is the 1623rd prime number. See primes in Base 10 Decimal
Not A Composite
Composites have more than just these two factors.
Thirteen Thousand Seven Hundred and Twenty-One is not a composite number because it has exactly two factors: One and Thirteen Thousand Seven Hundred and Twenty-One
Prime Factors
The number thirteen thousand seven hundred and twenty-one 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
137211
= 13721
Base Conversions
The number thirteen thousand seven hundred and twenty-one in 35 different bases