Checks whether a number is prime using an optimised primality test. Also generates all prime numbers within a specified range using the Sieve of Eratosthenes, finds the next prime after a given number, finds the nearest twin primes, and factorises composite numbers into their prime factors.
Enter a number to check if it's prime, find its factors, or generate all primes in a range.
Convert between length, weight, temperature, volume, area, and more.
Format numbers with locale-specific separators, currency, and scientific notation.
Calculate percentages, percentage change, and percentage of a total.
Calculate the number of days, weeks, or months between two dates.
Calculate exact age from a date of birth to today or a specific date.
Calculate mean, median, mode, standard deviation, and more from a dataset.