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A333414 Positive integers k such that k divides 17^k + 2. 1
1, 19, 35, 115, 44095, 211117, 14376053, 43472060395, 561558718915, 2182879071661 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(8) > 10^10.

a(11) > 4*10^12. - Giovanni Resta, Mar 22 2020

LINKS

Table of n, a(n) for n=1..10.

PROG

(PARI) for(k=1, 1e6, if(Mod(17, k)^k==-2, print1(k", ")))

CROSSREFS

Solutions to b^n == -2 (mod n): A015973 (b=3), A123062 (b=5), A277370 (b=7), A333413 (b=13), this sequence (b=17).

Cf. A333269.

Sequence in context: A044064 A044445 A166055 * A146579 A146454 A186405

Adjacent sequences:  A333411 A333412 A333413 * A333415 A333416 A333417

KEYWORD

nonn,more

AUTHOR

Seiichi Manyama, Mar 20 2020

EXTENSIONS

a(8)-a(10) from Giovanni Resta, Mar 22 2020

STATUS

approved

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Last modified May 24 07:14 EDT 2022. Contains 354005 sequences. (Running on oeis4.)