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This is a list of mathematical constants sorted by their representations as continued fractions. Continued fractions with more than 20 known terms have been truncated, with an ellipsis to show that they continue. Rational numbers have two continued fractions; the version in this list is the shorter one. Decimal representations are rounded or padded to 10 places if the values are known. || || 0.61803 39887 || (1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, … ) || irrational |- | || || 0.64341 05463 || (1, 1, 1, 22, 32, 132, 1292, 252982, 4209841472, 2694251407415154862, … ) || All terms are squares and truncated at 10 terms due to large size. |- | || || 0.66016 18158 || (1, 1, 1, 16, 2, 2, 2, 2, 1, 18, 2, 2, 11, 1, 1, 2, 4, 1, 16, 3, … ) || Hardy–Littlewood's twin prime constant. Presumed irrational, but not proved. |- | || || 0.57721 56649 || (1, 1, 2, 1, 2, 1, 4, 3, 13, 5, 1, 1, 8, 1, 2, 4, 1, 1, 40, 1, … ) || Presumed irrational, but not proved. |- | || || 0.56714 32904 || (1, 1, 3, 4, 2, 10, 4, 1, 1, 1, 1, 2, 7, 306, 1, 5, 1, 2, 1, 5, … ) || |- | || || 0.70258 || (1, 2, 2, 1, 3, 5, 1, 2, 6, 1, 1, 5, … ) || Value only known to 5 decimal places. |- | || || 0.76422 36535 || (1, 3, 4, 6, 1, 15, 1, 2, 2, 3, 1, 23, 3, 1, 1, 3, 1, 1, 7, 2, … ) || May have been proven irrational. |- | || || 0.83462 68417 || (1, 5, 21, 3, 4, 14, 1, 1, 1, 1, 1, 3, 1, 15, 1, 3, 8, 36, 1, 2, … ) || Gauss's constant |- | || || 0.87058 83800 || (1, 6, 1, 2, 1, 2, 956, 8, 1, 1, 1, 23, … ) || Brun's prime quadruplet constant. Estimated value; 99% confidence interval ± 0.00000 00005. |- | || || 0.86224 01259 || (1, 6, 3, 1, 6, 5, 3, 3, 1, 6, 4, 1, 3, 298, 1, 6, 1, 1, 3, 285, … ) || Base 2 Champernowne constant. The binary expansion is |- | || || 0.91596 55942 || (1, 10, 1, 8, 1, 88, 4, 1, 1, 7, 22, 1, 2, 3, 26, 1, 11, 1, 10, 1, … ) || Presumed irrational, but not proved. |- | || || 0.50000 00000 || (2 ) || |- | || || 0.28016 94990 || (3, 1, 1, 3, 9, 6, 3, 1, 3, 13, 1, 16, 3, 3, 4, … ) || Presumed irrational, but not proved. |- | || || 0.26149 72128 || (3, 1, 4, 1, 2, 5, 2, 1, 1, 1, 1, 13, 4, 2, 4, 2, 1, 33, 296, 2, … ) || Presumed irrational, but not proved. |- | || || 0.18785 96424 || (5, 3, 10, 1, 1, 4, 1, 1, 1, 1, 9, 1, 1, 12, 2, 17, 2, 2, 1, 1, … ) || |- | || || 0.12345 67891 || (8, 9, 1, 149083, 1, 1, 1, 4, 1, 1, 1, 3, 4, 1, 1, 1, 15, , 6, 1, … ) || Base 10 Champernowne constant. Champernowne constants in any base exhibit sporadic large numbers; the 40th term in has 2504 digits. |- | || || 1.00000 00000 || () || |- | || || 1.61803 39887 || (1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, … ) || |- | || || 1.60669 51524 || (1, 1, 1, 1, 5, 2, 1, 2, 29, 4, 1, 2, 2, 2, 2, 6, 1, 7, 1, 6, … ) || Not known whether algebraic or transcendental. |- | || || 1.90216 05823 || (1, 9, 4, 1, 1, 8, 3, 4, 7, 1, 3, 3, 1, 2, 1, 1, 12, 4, 2, 1, … ) || Brun's twin prime constant. Estimated value; best bounds 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Mathematical constants by continued fraction representation」の詳細全文を読む スポンサード リンク
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