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It is a Prime number

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Q: Is 521 a prime number
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Is 521 prime or composite?

521 is a Prime Number.


How do we get 521 by multiply a no.?

It is: 1*521 = 521 which is a prime number


What is the first prime number after 509?

521 is the next greater prime number after 509.


What is a prime number over 500?

503, 509, 521, 523, 541, 547, 557 . . .


Is 5731 a prime?

No, it is composite. Its Prime Factors are 11 and 521.


Is 9937 prime?

No. The Prime Factors are: 11 x 521.


What are the factors and prime factors of 1042?

1042 is a composite number because it has factors other than 1 and itself. It is not a prime number.The 4 factors of 1042 are 1, 2, 521, and 1042.The factor pairs of 1042 are 1 x 1042 and 2 x 521.The proper factors of 1042 are 1, 2, and 521 or,if the definition you are using excludes 1, they are 2 and 521.The prime factors of 1042 are 2 and 521.The 2 distinct prime factors (listing each prime factor only once) of 1042 are 2 and 521.The prime factorization of 1042 is 2 x 521.NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common.


How can you tell that 28655 is not a prime number?

Any number ending in 5 (or 0) is divisible by 5. 28655 = 5 x 5731 and is therefore not a prime number. Note: 5731 is also not a prime as it is divisible by 11 : 11 x 521 = 5731


What is the prime number after 500?

five hundred and three 503, 509, 521, 523 ... not 501 as 501/3 = 167


Why is 28655 not a prime number?

Because it has many Factors 1, 5, 11, 55, 521, 2605, 5731, 28655


How do you test if a Number is Prime?

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.)


Does the sum of two prime numbers equal a prime number?

If one of the two numbers is 2, the sum of two prime numbers may sometimes be a prime number. Examples of this are 2 + 11 = 13, 2 + 521 = 523, 2 + 281 = 283. There are an infinite number of similar examples where the sum of 2 plus a prime is another prime. However if neither number is 2, then the sum of two prime numbers is always an even number greater than 2 and therefore composite.