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Yes it can if the result is 2, else it can't because an odd number - an odd number = an even number, and 2 is the only even prime.

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โˆ™ 2011-09-12 22:19:36
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Q: If you subtract an odd number from a prime number can the result be prime?
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Related questions

When an odd number is subtracted from even number what is the result?

you will always have an odd number when you subtract an odd number from am even number


What odd composite number between 50 and 60 can be written as the sum of two prime numbers?

The odd composite numbers between 50 and 60 are 51, 55, and 57. Because all the primes are odd except for 2 and adding two odd numbers will result in an even number, one of the two prime numbers must be 2, which when added to an odd number will result in an odd number. So, we subtract 2 from each of these numbers and check whether it is prime. 51 - 2 = 49, which is not prime. 55 - 2 = 53, which is prime. 57 - 2 = 55, which is not prime. Thus, the number is 55, which can be written as 2 + 53.


What happens when you subtract a odd number and an odd number?

when an odd number is subtracted from an odd number the answer is an even number.


what happen if you subtract three odd numbers?

you get an odd number


What can you subtract from 7 so that that the number is even but the number subtracted cannot be an odd?

7 is an odd number. If you subtract an odd number minus an even number, you will always get an odd number. There is no way to avoid this.


What is the difference will you get if you subtract an odd number from even number?

The difference is an odd number.


If you add or subtract using only prime numbers is the answer always a prime number?

No, as all prime numbers are odd, excluding 2, and when you add two odd numbers you get an even number. This even number can't be a prime number as it will be divisible by 2. 101 and 31 are both prime, but 101+31 is 132.


What is the least odd prime number?

3 is the smallest odd prime number.


What is the lowest odd prime number?

The lowest odd prime number is 3 .


Is every odd number a prime?

No. 15 is odd, but not a prime.


Is a prime number odd?

All prime numbers are odd except one prime number and that is 2.


Why is and odd number minus an even number odd?

Because the second number from an odd number is odd, and every other number is an odd number. In fact, if you add or subtract an even number with any number, the result keeps the same parity as the other number. So an odd number minus an even number is odd, while an even number minus and even number is even.


Is it true that the sum of two prime numbers is always an even number?

Not quite.When two prime numbers of 3 and higher are added together, the result is always even, because all such prime numbers are odd numbers, and when two odd numbers are added together, the result is always an even number.However 2 is a prime number, and 2 is also an even number. Adding 2 (an even number) to a different prime number (an odd number) will always yield an odd number.Only if you don't include "2".


Which is the smallest odd prime number?

3 is the smallest odd prime number.


Is 2 an odd prime number?

NO,2 is the only prime number which is even, so 2 is not a odd prime number.


How many rectangles can you build with a prime number square tiles?

Given P = Prime number then you can build (P-1)/2 number of rectangles given any prime number. All prime numbers are odd and you would need two squares to make a rectangle. Given that you need two squares to build a rectangle, you divide your prime number by two to get the number of "pairs" of squares and thus the number of rectangles you can build. Since the number 2 does not divide evenly into an odd number - all prime numbers are odd - then you either subtract one from the prime number before dividing or discard the remainder if you choose not to subtract one before dividing.


How your prime number are odd or even?

Every prime number is odd except one: the number 2.


Is it poSsible to get an even number when you subtract an odd and an even number?

No.


Can you subtract an odd number from an even number to get an odd number?

Yes, that happens every single time.


If you subtract and even number and another even number can you get and odd number?

No


What is the difference between odd nos and prime nos?

odd is a number you cant halve a prime number is a number that you can double itself and it is odd


If you subtract 13 from an even number the answer will be odd?

Correct.


What do you get if you subtract an odd and even number?

Odd. First subtract 1 less than your odd number, (which is obviously even) to get even - even, which is even. Then take off your spare 1 to finish up odd.


Can an even number greater than 4 be written as the sum of 2 prime numbers if you use 2 as one of the primes?

No. 2 is the only even prime number, and if you add an even number and an odd number, the result will always be odd.


Is a prime number odd or even?

There is one even prime number (2); the rest are odd.