A016112 Smallest prime whose digit product is n, if possible; otherwise 0 if n is a prime > 7 or 1 if n has a prime factor > 7.

101, 11, 211, 13, 41, 151, 23, 17, 181, 19, 251, 0, 43, 0, 127, 53, 281, 0, 29, 0, 541, 37, 1, 0, 83, 11551, 1, 139, 47, 0, 523, 0, 1481, 1, 1, 157, 149, 0, 1, 1, 12451, 0, 67, 0, 1, 59, 1, 0, 283, 11177, 2551, 1, 1, 0, 239, 1, 1187, 1, 1, 0, 1453, 0, 1, 79, 881, 1

Offset: 0

Author

Robert G. Wilson v

Keywords

• nonn
• base

References

• Charles W. Trigg, Products of the Digits of Primes, J. Rec. Math., Vol. 22 #4, pp. 247-248, 1990