139163

Appears in sequences

• Concatenation of n-th prime number and n-th lucky number.at n=33A032603
• Numerators of continued fraction convergents to sqrt(217).at n=9A041404
• Smallest composite number in base n which contains its largest proper factor as a substring.at n=47A063248
• Composite numbers not divisible by 7 which in base 7 contain their largest proper factor as a substring.at n=11A063877