even, composite · 80th positive integer
The number 80
80 is an even composite number. It is the 80th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 2 × 2 × 5 |
| Divisors | 1, 2, 4, 5, 8, 10, 16, 20, 40, 80 |
| Binary | 1010000 |
| Hexadecimal | 0x50 |
| Roman numeral | LXXX |
| Digit sum | 8 |
| Properties | even, composite |
Reading 80 in NumGrid context
For 80, 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.
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 80 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 80 a prime number?
No. 80 is composite. Its prime factorization is 2 × 2 × 2 × 2 × 5.
What are the factors of 80?
The factors (divisors) of 80 are 1, 2, 4, 5, 8, 10, 16, 20, 40, 80.
What is 80 in binary?
80 in binary is 1010000. In hexadecimal it's 50.
What is 80 as a Roman numeral?
80 in Roman numerals is LXXX.
What's the digit sum of 80?
Adding the digits of 80: 8 + 0 = 8.