[seqfan] Re: The least Amicable Pair whose smallest Prime factor is P (n)

[Sven Simon]

Should be 'amicable pair list' of course... not 'amicable prime list' which is pure nonsense.

Sven

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Von: SeqFan <seqfan-bounces at list.seqfan.eu> Im Auftrag von zbi74583_boat at yahoo.co.jp
Gesendet: Dienstag, 25. September 2018 09:45
An: seqfan at list.seqfan.eu
Betreff: [seqfan] The least Amicable Pair whose smallest Prime factor is P (n)

    Hi  seqfans    s(n) : The least Amicable Pair whose smallest Prime factor is Prime(n)
    {220,284}, {12285,14595}, {42262694537514864075544955198125, 42405817271188606697466971841875},
{7^4*11*13^2*17*19*23^2*29*31*37*53*59^2*61*71*79*97*139*193*211*283*439*467*643*659*877*1259*1459^2*1667*1699*2801*2917*3541*74587*366983*2201897*19126727*714991703*22108315965121*8689461455946208667857*89*100329964009286143948575662850542265921787709,7^4*11*13^2*17*19*23^2*29*31*37*53*59^2*61*71*79*97*139*193*211*283*439*467*643*659*877*1259*1459^2*1667*1699*2801*2917*3541*74587*366983*2201897*19126727*714991703*22108315965121*8689461455946208667857*9029696760835752955371809656548803932960893899}
 The third term and the forth term are known the least. s(3) is from "Amicable Pair" on MathWorld. s(4) is my result It is interesting unknown problem to compute s(3) or s(4)


 Yasutoshi

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