👉 In mathematics, an arithmetician is a person who studies and solves problems in number theory. They are known for their work on divisibility, primes, and prime numbers. Arithmeticians often use mathematical tools such as algebra, geometry, and number theory to solve problems related to numbers, such as finding the greatest common divisor of two or more numbers, determining if a number is prime, and understanding the structure of integers. Arithmeticians also play an important role in cryptography,