143

143 is an odd composite number composed of two prime numbers multiplied together.

What does the number 143 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

143 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 143:

11 × 13

See below for interesting mathematical facts about the number 143 from the Numbermatics database.

Names of 143

• Cardinal: 143 can be written as One hundred forty-three.

Scientific notation

• Scientific notation: 1.43 × 102

Factors of 143

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 24

Divisors of 143

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 168
• Sum of proper divisors (its aliquot sum) s(n): 25
• 143 is a deficient number, because the sum of its proper divisors (25) is less than itself. Its deficiency is 118

Bases of 143

• Binary: 100011112
• Base-36: 3Z

Squares and roots of 143

• 143 squared (1432) is 20449
• 143 cubed (1433) is 2924207
• The square root of 143 is 11.9582607433
• The cube root of 143 is 5.2293215317

Scales and comparisons

How big is 143?
• 143 seconds is equal to 2 minutes, 23 seconds.
• To count from 1 to 143 would take you about eleven seconds.

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 143 cubic inches would be around 0.4 feet tall.

Recreational maths with 143

• 143 backwards is 341
• The number of decimal digits it has is: 3
• The sum of 143's digits is 8
• More coming soon!

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