← Ideas & learning Ideas & learning · Challenging English

271 (number)

Natural number

1 min
estimated reading
2
complete sections
12.44
algorithmic grade estimate

Before you read

Use the article and the local dictionary together

The complexity label is calculated from sentence length and syllable estimates; it is guidance, not an assessment of you. Open any highlighted word below for its full local dictionary page.

Words
95
Native text
832 characters
Dictionary match
79%
Revision
1353488081 · 2026-05-10T15:44:46Z
Key vocabulary

Words to check before reading

Overview

271 (two hundred and seventy-one) is the natural number after and before .

Properties

271 is a twin prime with 269, a cuban prime (a prime number that is the difference of two consecutive cubes), and a centered hexagonal number. It is the smallest prime number bracketed on both sides by numbers divisible by cubes, and the smallest prime number bracketed by numbers with five primes (counting repetitions) in their factorizations: : 270=2\cdot 3^3\cdot 5 and 272=2^4\cdot 17 . After 7, 271 is the second-smallest Eisenstein–Mersenne prime, one of the analogues of the Mersenne primes in the Eisenstein integers. 271 is the largest prime factor of the five-digit repunit 11111, and the largest prime number for which the decimal period of its multiplicative inverse is 5: : \frac 1 271 =0.00369003690036900369\ldots It is a sexy prime with 277.

Ideas & learning

Continue with related local reading