Septendecimal

Septendecimal, base 17, or rarely base XVII, sits in the line between hexadecimal and octodecimal. Septendecimal, being comprised of eighteen numeric symbols, is a peculiar numeral system along with a few other contenders for the weirdest numeral system: vigesimal and senary.

Symbols required

The septendecimal base requires eighteen symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F, and G.

Table of numbers 1 to 100 in septendecimal

1 - 1	2 - 2	3 - 3	4 - 4	5 - 5	6 - 6	7 - 7	8 - 8	9 - 9	10 - A
11 - B	12 - C	13 - D	14 - E	15 - F	16 - G	17 - 10	18 - 11	19 - 12	20 - 13
21 - 14	22 - 15	23 - 16	24 - 17	25 - 18	26 - 19	27 - 1A	28 - 1B	29 - 1C	30 - 1D
31 - 1E	32 - 1F	33 - 1G	34 - 20	35 - 21	36 - 22	37 - 23	38 - 24	39 - 25	40 - 26
41 - 27	42 - 28	43 - 29	44 - 2A	45 - 2B	46 - 2C	47 - 2D	48 - 2E	49 - 2F	50 - 2G
51 - 30	52 - 31	53 - 32	54 - 33	55 - 34	56 - 35	57 - 36	58 - 37	59 - 38	60 - 39
61 - 3A	62 - 3B	63 - 3C	64 - 3D	65 - 3E	66 - 3F	67 - 3G	68 - 40	69 - 41	70 - 42
71 - 43	72 - 44	73 - 45	74 - 46	75 - 47	76 - 48	77 - 49	78 - 4A	79 - 4B	80 - 4C
81 - 4D	82 - 4E	83 - 4F	84 - 4G	85 - 50	86 - 51	87 - 52	88 - 53	89 - 54	90 - 55
91 - 56	92 - 57	93 - 58	94 - 59	95 - 5A	96 - 5B	97 - 5C	98 - 5D	99 - 5E	100 - 5F

Theorized origin of septendecimal

It is possible that septendecimal was created by fusing septenary and decimal. They possibly took the "ary" out of "septenary," then made "decimal" the suffix, and thus, septendecimal was born.

Other

• "Septendecimal" in leet level 1 is "53p73n42y."

• "Septendecimal" in leet level 2 is "53|*73|V427."

• "Septendecimal" in leet level 3 is "$[-|>'|'[-|\|/-\/2`/."

References

This article "Septendecimal" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:Septendecimal. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one.

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