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There is no easy test. You need to divide the number by all the primes up to the square root of the number, so if you want to know if 56789 is prime, you need to divide by all the prime numbers up to 239. If you go through all the primes up to the square root and don't get an even number as the result of the division then the number is prime. (Incidentally, the factors of 56789 are 109 and 521.)
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What is the greatest prime number to test if 6330 is a prime number?
Divide it with primes less than half of the number.
Can decimals be prime?
on my test it said is 1.68 a prime number i sed yes but it was no :(
How do you test whether a number is a prime or not?
Their are many ways one that some times works is test those answers if prime are Mersenne primes. Or you could google"Is (put the questionable number here)prime?"
What is the greatest prime number you must consider to test whether 3599 is prime?
59
Is the number 999997 a prime number?
Easiest way to answer this question yourself is can this number be divided by 2 or 3 and not have a decimal or any "leftover" numbers? 999997 / 2 = 499998.5 = Nope 999997 / 3 = 333332.33 = Nope Answer: Yes, 999997 is a prime number. No, the above is not a legitimate prime test. 999997 is actually 757 * 1321 and is not prime. There is no easy prime test you can do in your head that I know of.
