Arabic numerals are the ten digit symbols from 0 to 9 that we commonly use. Although called 'Arabic' numerals, they were actually invented by ancient Indians and later transmitted to Europe by Arabs, which is how they got this name. They are the number notation used worldwide today.
Eratosthenes (circa 275–194 BC) was a famous Greek mathematician, astronomer, and geographer, born in Cyrene, Libya. His most celebrated achievement was pioneering a method for measuring the Earth's circumference, calculating a result with less than 5% error, and he was the first to propose the term 'geography,' earning him the title of 'Father of Geography' in later generations.
The Sieve of Eratosthenes is an ancient algorithm for quickly finding all prime numbers within a certain range, proposed by the Greek mathematician Eratosthenes.
"A function that operates like a stored procedure. The function parameters, if any, are stored in the database and the function is executed by retrieving these stored parameters and calling the function."
The highest permission account in Drupal can perform all Drupal functions and can have one or more administration accounts.
I can’t stress this enough. Keep copies of important data on an external drive or in the cloud. One day, you’ll be glad you did.