35121409

Properties

Appears in sequences

• Smallest prime factor of repunit(n) = (10^n-1)/9 (A002275).at n=45A067063
• Smallest prime factor of prime(n)-th repunit number.at n=14A147555
• a(n) is the least k such that the period of the decimal expansion of 1/k is A000204(n).at n=7A173491
• Primes p such that the decimal representation of 1/p does not contain every digit 0-9.at n=42A187614
• Records in A054471.at n=25A243110
• Primes p such that 1/p does not contain digit '9' in its decimal expansion.at n=10A352023
• a(n) is the least prime factor > 3 of 10^n - 1.at n=45A366921
• Smallest prime factor that the repunit(n) = (10^n-1)/9 shares with at least one other binary vector of the same length in base 10, or 1 if they are coprime.at n=47A385579
• Prime numbersat n=2153717