1234547domain: NPropertiesPrimalityPrimeyesAppears in sequencesLargest prime < the concatenation of the numbers from 1 to n (A007908).at n=5A276200Primes p such that A001414(p^4-1) is the square of a prime.at n=15A342825Primes whose second, third, fourth and fifth digits are 2345.at n=12A371845Prime numbersat n=95360