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What do you get if you the numbers 1 to 12 into six pairs so that the sum of each pair is a prime number and all prime numbers are different?
Wiki User
∙ 15y ago
1+2...+12=78
6 Prime number combinations that make 78.
Constraints: x>=3 x<=23 x=/=x
3+7+11+17+19+21=78
Test:
1+2=3
3+4=7
5+6=11
7+10=17
11+8=19
9+12=21
You get: 3, 7, 11, 17, 19, and 21.
Wiki User
∙ 15y ago
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How many twin prime numbers between 0 and 1000?
There are 35 pairs of twin prime numbers totaling 69 numbers (prime number 5 appears twice in the twin pairs) between 0 and 1000.
What is the least number that is divisible by four different prime numbers?
the least number is 210 which is divisible by four different prime numbers.
What number has five different prime factors?
Since there are an infinite number of prime numbers, there are infinite numbers with any given number of prime factors.
How many pairs of prime numbers are there to express 18 as the sum of two prime numbers?
There are two pairs of prime numbers that express 18 as the sum of two prime numbers: 7 + 11 = 18 and 5 + 13 = 18.
What is a mirror prime number and do both numbers have to be prime in the answer and what are the mirror primes from 1-100?
Mirror primes are pairs of prime numbers whose digits are reversed. (13,31)(17,71)(37,73)(79,97)
What do they mean if they say name 2 different factors pairs for each number?
Prime numbers have one factor pair. Composite numbers have two or more pairs. (6,8) and (4,12) are two different factor pairs for 48.
What are the two largest relative prime numbers?
Relatively prime numbers are numbers which share no common factors. This means the numbers are both the product of an entirely different set of prime numbers. There is no limit to the number of prime numbers. Thus there is no limit to the number of relatively prime pairs. Therefore there cannot be two "largest" relative primes.
Which number pairs have the gcf of 1?
Co-prime numbers
What are all the pairs of prime numbers that are consecutive numbers?
The numbers 2 and 3 are consecutive prime numbers. Are there other pairs of prime numbers which are consecutive numbers?
How many twin prime numbers between 0 and 1000?
There are 35 pairs of twin prime numbers totaling 69 numbers (prime number 5 appears twice in the twin pairs) between 0 and 1000.
What two number pairs whose least common factor is the product of the number?
Any pair of prime or relatively prime numbers.
How many prime number pairs are there?
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. There are an infinite amount of prime numbers.
Is there a point which a prime numbers factor pairs reverse order?
A prime number, P, has only two factor pairs: (1, P) and (P, 1).
What is the least number that is divisible by four different prime numbers?
the least number is 210 which is divisible by four different prime numbers.
What are two prime numbers less than 20 who's sum is also a prime number?
(2,3) and (2,5) are the two pairs such that the sum of their elements is a prime number.
What number has five different prime factors?
Since there are an infinite number of prime numbers, there are infinite numbers with any given number of prime factors.
What do you get when you multiply 2 prime numbers?
A composite number. (If they are different numbers, keep in mind 1 is not a prime number)
