👉 "Uratic" is a term used in mathematics, specifically in the field of number theory. It refers to a prime number that can be expressed as a sum of two primes. For example, 17 is the first prime number greater than 10 that cannot be written as the sum of two other primes (since it's not divisible by any prime less than its square root). The term "uratic" was introduced to describe this property and it has been widely used in the literature