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A109279 Numbers n such that a^d + b^d + c^d + ... is prime, where a*b*c* ... is the prime factorization of n and d is the largest digit of n. 1
10, 11, 12, 14, 34, 40, 54, 56, 63, 101, 142, 176, 184, 232, 245, 279, 296, 300, 320, 325, 333, 376, 384, 432, 475, 500, 504, 561, 567, 568, 595, 640, 651, 657, 664, 714, 768, 778, 780, 792, 796, 824, 864, 867, 972, 1001, 1016, 1020, 1042, 1048, 1110, 1112 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
1118092 generates a 50 digit prime: 2^9 + 2^9 + 279523^9.
LINKS
EXAMPLE
34 is in the sequence because 34=2*17 and 2^4 + 17^4 = 83537, a prime.
CROSSREFS
Sequence in context: A323190 A046431 A108697 * A258744 A219251 A154770
KEYWORD
base,easy,nonn
AUTHOR
Jason Earls, Jun 24 2005
STATUS
approved

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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)