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A321364 Positive integers m such that 13^m == 12 (mod m). 1
1, 13757837, 6969969233, 514208575135 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

No other terms below 10^15.

Some larger terms: 14551705803598782884189, 268766423508299769671017810348321281664525668552158231.

LINKS

Table of n, a(n) for n=1..4.

PROG

(PARI) is(n) = Mod(13, n)^n==12 \\ Felix Fröhlich, Nov 08 2018

CROSSREFS

Solutions to 13^m == k (mod m): A001022 (k=0), A015963 (k=-1), A116621 (k=1), A116622 (k=2), A116629 (k=3), A116630 (k=4), A116611 (k=5), A116631 (k=6), A116632 (k=7), A295532 (k=8), A116636 (k=9), A116620(k=10), A116638 (k=11), this sequence (k=12), A321365 (k=14), A116639 (k=15).

Cf. A116609, A127821, A128149.

Sequence in context: A082256 A324261 A324262 * A116148 A210085 A251521

Adjacent sequences:  A321361 A321362 A321363 * A321365 A321366 A321367

KEYWORD

nonn,more

AUTHOR

Max Alekseyev, Nov 07 2018

STATUS

approved

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Last modified January 17 17:47 EST 2022. Contains 350402 sequences. (Running on oeis4.)