even, composite, triangular · 10th positive integer
The number 10
10 is an even composite number. It's known as the base of the decimal system and the number of fingers on two hands. It is the 10th positive integer.
Quick reference
| Prime factorization | 2 × 5 |
| Divisors | 1, 2, 5, 10 |
| Binary | 1010 |
| Hexadecimal | 0xA |
| Roman numeral | X |
| Digit sum | 1 |
| Properties | even, composite, triangular |
Why 10 is notable
The base of the decimal system and the number of fingers on two hands.
Reading 10 in NumGrid context
The 10 record above pulls directly from classical number theory plus NumGrid solver-derived puzzle statistics. What follows is the per-entity context — how 10 sits in the broader integer properties and number-guessing puzzles distribution and which underlying factors drive the headline numbers.
The methodology behind every numeric value on this page is publicly documented on the classical number theory plus NumGrid solver-derived puzzle statistics portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for 10 is typically a peer within positive integers within the NumGrid target pool with similar size, similar exposure, or similar geography — not the national-level summary alone.
Frequently asked
Is 10 a prime number?
No. 10 is composite. Its prime factorization is 2 × 5.
What are the factors of 10?
The factors (divisors) of 10 are 1, 2, 5, 10.
What is 10 in binary?
10 in binary is 1010. In hexadecimal it's A.
What is 10 as a Roman numeral?
10 in Roman numerals is X.
What's the digit sum of 10?
Adding the digits of 10: 1 + 0 = 1.