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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 factorization2 × 2 × 2
Divisors1, 2, 4, 8
Binary1000
Hexadecimal0x8
Roman numeralVIII
Digit sum8
Propertieseven, 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.

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