The digits of Theodorus's constant
form the decimal expansion
(OEIS A002194). It was computed to decimal digits by E. Weisstein
on Jul. 23, 2013.
The Earls sequence for gives the starting position of
consecutive copies of the decimal representation of
, counting the first digit
after the decimal point as position 1. Its known
first values for
,
2, ... are 27, 215, 1651, 2279, 21640, 176497, 7728291, 77659477, 638679423, ...
(OEIS A224874).
The known -constant primes occur at prefix lengths 2, 3, 19,
111, 116, 641, 5411, 170657, ... (OEIS A119344),
counting the integer-part 1 as the first digit.
The starting positions of the first occurrence of the decimal representation of , 1, 2, ... in the decimal
expansion of
(including the initial 1 and counting it as the first
digit) are 5, 1, 4, 3, 23, 6, 12, 2, 8, 18, ... (OEIS A229200).
Scanning the decimal expansion of , including the integer-part 1, until all
-digit strings have occurred, including
those with leading zeros, the reported last 1-, 2-, ...-digit strings are 4, 91, 184, 5566, 86134, 035343, ..., which end
at digits 23, 378, 7862, 77437, 1237533, 16362668, ....
The digit sequence 9876543210 does not occur in the first digits of
, but 0123456789 does, starting at positions 1104282392,
1879095207, 3037917993, ... (E. Weisstein, Jul. 23, 2013).
It is not known if is normal (Beyer et
al. 1969, 1970ab), and the following table gives the reported counts of digits
in the first
fractional decimal digits, excluding the integer-part 1.
| OEIS | 10 | 100 | |||||||||
| 0 | 3 | 15 | 95 | 1035 | 10125 | 100234 | 1000172 | 9995281 | 99976638 | 1000006042 | |
| 1 | 0 | 7 | 97 | 996 | 10019 | 99587 | 1001548 | 10001670 | 99988551 | 999978902 | |
| 2 | 1 | 8 | 100 | 994 | 9829 | 99812 | 1000263 | 10001751 | 99991487 | 999982296 | |
| 3 | 1 | 9 | 97 | 945 | 9898 | 99818 | 998943 | 10000247 | 100004464 | 999998469 | |
| 4 | 0 | 7 | 84 | 971 | 10077 | 99897 | 998647 | 10001384 | 100023203 | 1000009144 | |
| 5 | 2 | 13 | 93 | 1009 | 10037 | 100260 | 999993 | 9995879 | 99996674 | 999982506 | |
| 6 | 0 | 10 | 103 | 1027 | 10052 | 100558 | 999976 | 9999931 | 100020148 | 1000025094 | |
| 7 | 2 | 11 | 98 | 991 | 9921 | 99921 | 1000059 | 10002655 | 99987934 | 999997927 | |
| 8 | 1 | 14 | 125 | 1002 | 9996 | 100055 | 1000650 | 10001042 | 100017107 | 1000013674 | |
| 9 | 0 | 6 | 108 | 1030 | 10046 | 99858 | 999749 | 10000160 | 99993794 | 1000005946 |