269119
domain: N
Appears in sequences
- Composite numbers k = concat(x,LSD(k)) such that k' = x', where k' is the arithmetic derivative of k.at n=4A293478
- Composite numbers k = concat(x,LSD(k)) such that the sum of the aliquot parts of k is equal to the sum of the aliquot parts of x.at n=5A293480
- First n-bit number to appear in Van Eck's sequence (A181391).at n=18A358258