Question 1

How do I check if a number is prime?

Accepted Answer

Check divisibility by primes up to √n. For 97: check 2,3,5,7 (since √97 < 10). None divide 97, so it's prime.

Question 2

Why are prime numbers important?

Accepted Answer

Foundation of number theory. Used in cryptography (RSA), computer science, and pure mathematics.

Question 3

How accurate are these calculations?

Accepted Answer

Our calculator uses double-precision floating-point arithmetic, accurate to about 15-16 significant digits for most calculations.

Question 4

Can I use the result in further calculations?

Accepted Answer

Yes, results are calculated to full precision. You can copy the exact value or use the rounded display depending on your needs.

Prime Number Checker Calculator - Free Online

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