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Q: Is a Conjecture is false all prime numbers are odd?

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false

The statement is false.

False.

False

False

That is false. Two is a prime number and two is even.

False. An enormous number of them are divisible by three.

To be true a Conjecture must be true for all cases.

A prime number is a number that can only be divided by 1 and itself. Not all odd numbers are prime numbers; for example 9, 15, 21 can be divided by more than one and itself.

All composite numbers do. All prime numbers are already prime.

Any conjecture you want; a conjecture is merely an opinion or conclusion based on given information. Whether the conjecture is true or not is left to be proved (if provable at all). One opinion (conjecture) could be that the sum is "blue". It's a totally nonsense conjecture, but its a conjecture none the less. A sensible conjecture might be that the sum is odd. This can be tested and found to be true or false by summing the first 46 odd numbers (a mechanical method that is fairly easy in this case), or by the mathematical manipulation of axioms via algebra (a mathematical proof).

Goldbach's conjecture

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97 these are all the prime numbers

All prime numbers are odd with the only exception of the prime number 2. However, not all odd numbers are prime.

All prime numbers are odd except for the number 2.

All prime numbers are rational.

With exception of the number 2, all prime numbers are odd. However, not all odd numbers are prime.

False

No. 9 is not prime.

A mouse is a mammal, but it us not a monkey.

There is no need to do prime factorization as prime numbers are already prime.

Two composite numbers may or may not be relatively prime, depending on their factors. Relatively prime numbers are sets of two or more numbers having 1 as their greatest common factor (gcf). All even numbers have 2 as a common factor, so no even number is relatively prime with any other even number.

It is impossible to list the infinite number of prime numbers and composite numbers.

Prime numbers never stop, it is impossible to list them all.

All prime numbers are integers. All integers are rational.