30607

Appears in sequences

• Odd composite numbers which in base 2 contain their largest proper factor as a substring of digits.at n=37A063131
• Composite numbers not divisible by 2 or 3 which in base 3 contain their largest proper factor as a substring.at n=25A063132
• Composite numbers not divisible by 2, 3, 5 or 7 which in base 2 contain their largest proper factor as a substring.at n=31A063138
• Composite numbers which in base 8 contain their largest proper factor as a substring.at n=4A063167
• Duplicate of A063167.at n=4A063878
• Number of permissible patterns of primes in a fixed interval of n consecutive integers.at n=39A094660
• Squarefree k > 1 with sigma(sigma(sigma(k))) < 3*k + 1.at n=35A320513