even, composite, Fibonacci, palindrome · 8th positive integer
The number 8
8 is an even composite number. It's known as the smallest cube greater than 1. It is the 8th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 2 |
| Divisors | 1, 2, 4, 8 |
| Binary | 1000 |
| Hexadecimal | 0x8 |
| Roman numeral | VIII |
| Digit sum | 8 |
| Properties | even, composite, Fibonacci, palindrome |
Why 8 is notable
The smallest cube greater than 1.
Reading 8 in NumGrid context
For 8, 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.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for 8’s peers within positive integers within the NumGrid target pool. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Frequently asked
Is 8 a prime number?
No. 8 is composite. Its prime factorization is 2 × 2 × 2.
What are the factors of 8?
The factors (divisors) of 8 are 1, 2, 4, 8.
What is 8 in binary?
8 in binary is 1000. In hexadecimal it's 8.
What is 8 as a Roman numeral?
8 in Roman numerals is VIII.
What's the digit sum of 8?
Adding the digits of 8: 8 = 8.
Related numbers & strategy
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