990001

Properties

Appears in sequences

• Numbers k such that k and k^2 use only the digits 0, 1, 5, 8 and 9.at n=49A136874
• Numbers k such that k and k^2 use only the digits 0, 1, 8 and 9.at n=49A136881
• Smallest n-digit number m such that phi(10^n+1)=phi(m), gcd(10^n+1,m)=1 and 10 does not divide m, or zero if there is no such m.at n=5A147547
• Primes of the form k^3-k^2+1, k>0.at n=33A162292
• Prime numbersat n=77778