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A117840 Smaller of two consecutive prime numbers with the same multiplicative digital root. 0
79, 101, 103, 107, 151, 163, 179, 197, 211, 229, 251, 271, 281, 293, 349, 379, 401, 419, 443, 491, 503, 509, 521, 523, 541, 563, 577, 599, 601, 613, 631, 653, 691, 701, 769, 821, 853, 857, 881, 997, 1009, 1013, 1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

EXAMPLE

79 and 83 are two consecutive primes with the same multiplicative digital root, namely 8.

CROSSREFS

Sequence in context: A106757 A285228 A087537 * A296012 A193142 A033250

Adjacent sequences:  A117837 A117838 A117839 * A117841 A117842 A117843

KEYWORD

base,nonn

AUTHOR

Luc Stevens (lms022(AT)yahoo.com), Apr 30 2006

STATUS

approved

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Last modified August 14 04:13 EDT 2020. Contains 336477 sequences. (Running on oeis4.)