71205

Appears in sequences

• Numbers k such that k and k^2 have the same set of digits.at n=26A029793
• Numbers n such that both n and n squared contain exactly the same digits, and n is not divisible by 10.at n=16A258231
• Integers m such that iterating the map f(x) = x^2 + 1 on m generates a number ending with m.at n=22A350130
• Tetraprimes (or products of exactly four distinct prime numbers) that are the sum of two successive tetraprimes.at n=36A380348