154843

Appears in sequences

• Quasi-Carmichael numbers to base -2: squarefree composites n such that for every prime p that divides n, p+2 divides n+2.at n=6A029562
• Number of digits in the number formed by concatenating the digits of n, n+1, ..., A332584(n), or -1 if A332584(n) = -1.at n=25A332585