7000009domain: NPropertiesPrimalityPrimeyesAppears in sequencesTurban numbers: without letters r, t, or u.at n=32A072956Happy primes of the form a*10^k + b with single-digit a and b, a > 0, k > 0.at n=28A109902Primes of the form 7n^3+9.at n=9A201257Prime numbersat n=476650