The Newest Boring Number: 20990

In a prior post, 20067 was described as a "boring" number. It was considered boring because it was the lowest number not occurring in the On-Line Encyclopedia of Integer Sequences (OEIS). 

However, this month, a new OEIS sequence was published, including 20667 as a term. The sequence is: A379570 - OEIS. 20667 is the fifth sequence term defined by "Number of n-digit numbers that have exactly 8 divisors."

So now, the lowest number not occurring in the OEIS is: 20990.

Update 1/2/2025. Just after 20067 was replaced by a new most boring number, a sequence that included the prime number 45247 was submitted, so it lost its designation as the most boring prime number. Now, the lowest prime number not occurring in the OEIS is 48973 (the 5033rd prime).

The new sequence including 45247 is: A379615 Numerators of the partial sums of the reciprocals of the sum of bi-unitary divisors function (A188999).