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Search: id:A046273
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A046273 Largest prime substring in 7^n (0 if none). +0
3
0, 7, 0, 43, 401, 7, 7649, 823, 4801, 3607, 82475249, 7326743, 41287201, 89, 23072849, 7561, 232930569601, 2630513987207, 8413597910449, 398895185373143, 297612001, 558545864083, 2988049, 3400809163 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Cf. A046265.

Sequence in context: A167299 A064854 A157779 this_sequence A167317 A024094 A157307

Adjacent sequences: A046270 A046271 A046272 this_sequence A046274 A046275 A046276

KEYWORD

nonn

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1998.

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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