PrimeCheck: Prime Checker

PrimeCheck: Prime Number Checker & Sieve Explorer Instantly analyze prime numbers, calculate complete factorizations, and explore prime distributions with PrimeCheck — a fast, accurate math tool designed for students, educators, and mathematics enthusiasts. Enter any whole number to verify whether it is prime or composite in real time, view full prime factor trees, and generate range sieves without distractions. Features: • Instant Primality Test — Deterministic and fast trial division algorithm to check any integer. • Prime Factorization Tree — Complete prime factor breakdown equations (e.g. 84 = 2² × 3 × 7). • Divisors List — Full matrix of all positive factors for composite numbers. • Range Sieve & Density — Discover all prime numbers and calculate prime density across any interval [A, B]. • 100% Offline Sanctuary — Performs all mathematical calculations locally on-device without internet. Privacy & Safety: • 100% Offline — Operates entirely on-device with zero network requests or background traffic. • Zero Data Collection — No user numbers, inputs, or analytics ever leave your phone. • No Ads & Zero Distractions — Clean, focused tool designed for rapid calculation. • No Permissions Required — Runs with minimal device footprint and zero unnecessary permissions. Master prime numbers effortlessly with PrimeCheck.