Divide it with primes less than half of the number.
59
What is the greatest prime you must consider to test whether 2834 isβ prime?
All even numbers are composite except 2 itself which is a prime number because it has only two factors which are itself and one.
on my test it said is 1.68 a prime number i sed yes but it was no :(
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?"
If its divisible by 2 then it's not a prime number. But 2 by itself is a prime number
59
53
What is the greatest prime you must consider to test whether 2834 isβ prime?
You only need to test numbers up to the last prime number equal to or less than the square root of a number when testing whether it is prime. The square root of 854 is between 29 and 30, so you would test up to the prime number 29.
You don't have to test anything. Any number greater than 5 that ends in 5 is composite.
All even numbers are composite except 2 itself which is a prime number because it has only two factors which are itself and one.
It is 157 because the prime factors of 6437 are 41 and 157
It is 149 because as a product of its prime factors: 7*149 = 1043
You have to take the square root of the number (= 59,99) ==> You have to test all prime numbers smaller than 59,99. You will have to test these numbers: 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59
on my test it said is 1.68 a prime number i sed yes but it was no :(
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?"