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Yes, 5 and 7, and 11 and 13

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14y ago

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What number is between a pair of twin primes and has exactly 4 factors?

Six has four factors and is in between the twin primes 5 and 7.


Do twin primes have one composite number between them?

No, twin primes are pairs of prime numbers that have only one number between them which is a composite number. For example, (3, 5) and (11, 13) are twin prime pairs with the composite number 4 and 12 respectively between them.


How do you get the composite numbers between 1 and 20?

Throw out the primes. 4 6 8 9 10 12 14 15 16 18 20


What is the ratio of the number of primes and the number of composites between and 40?

4 to 15 exclusive 4 to 17 inclusive


What are all the symmetrical primes between 1 and 200?

2 21 3 31 4 41 4 41...


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4 to 15 exclusive 4 to 17 inclusive


What are the ratings and certificates for Twin Peaks - 1990 1-4?

Twin Peaks - 1990 1-4 is rated/received certificates of: Argentina:13 USA:TV-14


What are the ratings and certificates for Twin Peaks - 1990 2-4?

Twin Peaks - 1990 2-4 is rated/received certificates of: Argentina:13 USA:TV-14


What are prime triplet numbers?

A prime triplet contains a pair of twin primes (p and p + 2, or p + 4 and p+ 6), a pair of cousin primes (pand p + 4, or p + 2 and p + 6), and a pair of sexy primes (p and p + 6).


What is the ratio of the number of primes and the number of composites between 20 and 40?

4 to 15 exclusive 4 to 17 inclusive


What the difference between the temperatures -4 and 14?

14 - (-4) = 14 + 4 = 18


What is 4 as a product of its primes?

2 x 2