78475

Appears in sequences

• Nonnegative numbers n such that n^42 + 42 is prime.at n=8A104111
• Composites whose prime factorization in base 9 is an anagram of the number in base 9.at n=3A260053
• Numbers n=2*k-1 where Sum_{j=1..k} (-1)^(j+1) * d(2*j-1) achieves a new negative record, with d(n) = number of divisors of n (A000005).at n=25A318738