508369

Appears in sequences

• Squares s such that s + 1234567890 is prime.at n=23A241538
• Numbers k with the property that it is possible to write the base 2 expansion of k as concat(a_2,b_2), with a_2>0 and b_2>0 such that, converting a_2 and b_2 to base 10 as a and b, we have (a+b)^2 = k.at n=27A258844