# 263

## 263 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 263 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

263 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 263:

### 263

See below for interesting mathematical facts about the number 263 from the Numbermatics database.

### Names of 263

• Cardinal: 263 can be written as Two hundred sixty-three.

### Scientific notation

• Scientific notation: 2.63 × 102

### Factors of 263

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 263

### Divisors of 263

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 264
• Sum of proper divisors (its aliquot sum) s(n): 1
• 263 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 262

### Bases of 263

• Binary: 1000001112
• Base-36: 7B

### Squares and roots of 263

• 263 squared (2632) is 69169
• 263 cubed (2633) is 18191447
• The square root of 263 is 16.2172747405
• The cube root of 263 is 6.4069585771

### Scales and comparisons

How big is 263?
• 263 seconds is equal to 4 minutes, 23 seconds.
• To count from 1 to 263 would take you about two minutes.

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 263 cubic inches would be around 0.5 feet tall.

### Recreational maths with 263

• 263 backwards is 362
• The number of decimal digits it has is: 3
• The sum of 263's digits is 11
• More coming soon!