Check if a number is prime, view its prime factors, and discover adjacent prime numbers.
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Evaluated using deterministic trial division up to √n.
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Trial division test up to √n | Prime factorization
Number: 97.
Result: 97 is a Prime Number | Next prime: 101 | Previous prime: 89.
Find the Least Common Multiple (LCM) of two or more numbers with step factorization.
Open calculatorFind the Highest Common Factor (HCF) or Greatest Common Divisor (GCD) of numbers.
Open calculatorCalculate the factorial of an integer n! with trailing zeros count and mathematical expansion.
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Open calculatorA prime number is a positive integer strictly greater than 1 that has no positive divisors other than 1 and itself.
No. By mathematical definition, 1 is neither prime nor composite; it is considered a unit.
The Fundamental Theorem of Arithmetic establishes that every integer greater than 1 is either prime or can be uniquely factored into prime numbers. Primes form the basis of modern asymmetric encryption (RSA, Diffie-Hellman) and computer security.