A069573
Largest n-digit number in which the k-th digit is a divisor or a multiple of k.
Original entry on oeis.org
9, 89, 989, 8989, 58989, 658989, 7658989, 87658989, 987658989, 5987658989, 15987658989, 615987658989, 1615987658989, 71615987658989, 571615987658989, 8571615987658989, 18571615987658989, 918571615987658989
Offset: 1
A069574
Smallest n-digit prime in which the k-th digit is a divisor or a multiple of k, or 0 if no such prime exists.
Original entry on oeis.org
2, 11, 113, 1117, 11113, 111119, 1111169, 11111117, 111111113, 1111111121, 11111111113, 111111111149, 1111111111183, 11111111111123, 111111111111389, 1111111111111123, 11111111111111119, 111111111111111143, 1111111111111111111, 11111111111111111143
Offset: 1
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