# 599

This number is a prime. (x/log x)(1 + 0.992/log x) < π(x) <(x/log x)(1 + 1.2762/log x), when x is greater than or equal to the prime number 599. [Dusart] The number in the street address of the Administrative building at Saint-Prime (599, rue Principale, Saint-Prime, Québec, Canada). [Blanchette] The smallest prime whose digits form a triangle with the largest prime perimeter. [Loungrides] The smallest prime that creates other primes when sandwiched between two-digit repdigits in three ways: (15991, 35993, 75997). [Loungrides] The 599th beastly number is 220666. This is the smallest case in which the sum of digits of a beastly number (22) is less than the sum of digits of its beastly index (23). Is there any example in which sums of digits are equal? [Gaydos] Historically, subprime (also referred to as "non-prime") borrowers were defined as having FICO scores of 599 and below. The lesser of the smallest twin prime pair to have invertible prime prime index. [Bajpai] The five prime months of the year contain 151 days. Note that 5 * 151 - (5 + 151) = 599, 5 * 151 + (5 + 151) = 911 and 911 - 599 +/- 1 are twin primes. [Homewood] Mount Takao (高尾山, Takao-san) is 599 meters tall.

(There is one curio for this number that has not yet been approved by an editor.)