odd, prime · 823rd positive integer
The number 823
823 is an odd prime number. It is the 823rd positive integer.
Quick reference
| Prime factorization | 823 (prime) |
| Divisors | 1, 823 |
| Binary | 1100110111 |
| Hexadecimal | 0x337 |
| Roman numeral | DCCCXXIII |
| Digit sum | 13 |
| Properties | odd, prime |
Reading 823 in NumGrid context
For 823, the underlying data on this page comes from classical number theory plus NumGrid solver-derived puzzle statistics. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
Every number on this page links back to classical number theory plus NumGrid solver-derived puzzle statistics; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
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 823 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 823 a prime number?
Yes. 823 is prime — its only divisors are 1 and itself.
What are the factors of 823?
The factors (divisors) of 823 are 1, 823.
What is 823 in binary?
823 in binary is 1100110111. In hexadecimal it's 337.
What is 823 as a Roman numeral?
823 in Roman numerals is DCCCXXIII.
What's the digit sum of 823?
Adding the digits of 823: 8 + 2 + 3 = 13.