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 A177496 a(n) = least k such that the remainder when 1000^k is divided by k is n. 0
 3, 62, 997, 6, 115, 7, 51, 14, 991, 11, 23, 13, 21, 17, 197, 24, 983, 158, 109, 35, 89, 42, 977, 61, 39, 34, 139, 36, 971, 38, 3291, 188, 967, 66, 193, 92, 57, 74, 999161, 52, 137, 479, 69, 239, 191, 53, 953, 49, 317, 70, 73, 79, 947, 65291, 63, 59, 448991, 114, 941 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS MATHEMATICA t = Table[0, {98}]; k = 1; While[k < 10000000, a = PowerMod[1000, k, k]; If[a < 99 && t[[a]] == 0, t[[a]] = k; Print[{a, k}]]; k++ ]; t CROSSREFS Cf. A036236, A078457, A119678, A119679, A127816, A119715, A119714, A127817, A127818, A127819, A127820, A127821, A128154, A128155, A128156, A128157, A128158, A128159, A128160, A128361, A128362, A128363, A128364, A128365, A128366, A128367, A128368, A128369, A128370, A128371, A128372, A177495 Cf. A128149, A128150, A128172. Sequence in context: A239576 A279974 A275746 * A104403 A301609 A144422 Adjacent sequences:  A177493 A177494 A177495 * A177497 A177498 A177499 KEYWORD nonn AUTHOR Alexander Adamchuk, May 10 2010 STATUS approved

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Last modified October 20 17:40 EDT 2019. Contains 328268 sequences. (Running on oeis4.)