# 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 are 3 curios for this number that have not yet been approved by an editor.)