390932389
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- Middle q of three consecutive primes p,q,r, such that one adjacent prime is near, the other is far and the ratio of the differences (whichever of (r-q)/(q-p) or (q-p)/(r-q) is greater than 1) sets a record.at n=30A084105
- Smaller of two consecutive primes p and q, both ending with 9, such that q - p = 10*n, or -1 if no such primes exist.at n=21A381511
- Prime numbersat n=20878137