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A201017 Primes whose multiplicative digital root is 5. 1
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified February 21 01:03 EST 2020. Contains 332086 sequences. (Running on oeis4.)