Number theory calculator
Number theory tools: primality testing, prime factorization, GCD/LCM, Euler's totient, divisors, Fibonacci, Collatz, and more.
Number
Number theory
Number theory studies integers and their properties. Key concepts: prime numbers (only divisible by 1 and themselves), GCD (greatest common divisor), LCM (least common multiple), Euler's totient φ(n) (count of numbers ≤ n coprime to n).
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