1535121
domain: N
Appears in sequences
- Perfect powers using only prime digits and 1.at n=28A083806
- a(1) = 1, then least square such that every partial concatenation is a prime.at n=36A090257
- Squares k such that k - 2 and k + 2 are prime.at n=25A144938
- Odd squares k, multiples of 3 and non-multiples of 5, such that sigma(k)/k >= 5/3.at n=26A388016