 Consequently, a random integer with at most digits (for large enough ) is about half as likely to be prime as a random integer with at most digits.For example, among the positive integers of at most 1000 digits, about one in 2300 is prime (), whereas among positive integers of at most 2000 digits, about one in 4600 is prime ().In other words, the average gap between consecutive prime numbers among the first integers is roughly .