odd, prime · 71st positive integer
The number 71
71 is an odd prime number. It is the 71st positive integer.
Quick reference
| Prime factorization | 71 (prime) |
| Divisors | 1, 71 |
| Binary | 1000111 |
| Hexadecimal | 0x47 |
| Roman numeral | LXXI |
| Digit sum | 8 |
| Properties | odd, prime |
Reading 71 in NumGrid context
71 is one of the data points covered by this site’s integer properties and number-guessing puzzles dataset. The detail above comes directly from classical number theory plus NumGrid solver-derived puzzle statistics; the context that follows situates the headline numbers against the broader distribution across positive integers within the NumGrid target pool.
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.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for 71’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 71 a prime number?
Yes. 71 is prime — its only divisors are 1 and itself.
What are the factors of 71?
The factors (divisors) of 71 are 1, 71.
What is 71 in binary?
71 in binary is 1000111. In hexadecimal it's 47.
What is 71 as a Roman numeral?
71 in Roman numerals is LXXI.
What's the digit sum of 71?
Adding the digits of 71: 7 + 1 = 8.