A201017 Primes whose multiplicative digital root is 5.

5, 53, 151, 157, 359, 557, 571, 593, 751, 953, 1151, 1153, 1511, 1531, 1553, 1571, 1579, 1597, 1759, 3511, 3533, 5113, 5153, 5171, 5179, 5197, 5333, 5351, 5531, 5711, 5791, 7151, 7159, 7559, 7577, 7591, 7757, 7951, 9157, 11351, 11579, 11593, 11597, 11953

Offset

1,1

Comments

Complement of A201018 with respect to A034052.

Links

Table of n, a(n) for n=1..44.

Eric Weisstein's World of Mathematics, Multiplicative Digital Root

Example

Prime 157 is in the sequence because 1*5*7=35, 3*5=15, 1*5=5.

Crossrefs

Cf. A201018 (composite numbers whose multiplicative digital root is 5), A034052 (numbers whose multiplicative digital root is 5).

Sequence in context: A139869 A072156 A101190 * A106097 A163580 A075540

Adjacent sequences: A201014 A201015 A201016 * A201018 A201019 A201020

Keyword

nonn,base

Author

Jaroslav Krizek, Nov 25 2011

Status

approved