Number bases

Positive integers in decimal and in binary bases of the n-th power of two (2ⁿ).

decimal: base ten (10)
binary: base two (2 = 2¹, first power of two)
quaternary: base four (4 = 2², second power of two)
octal: base eight (8 = 2³, third power of two)
hexadecimal: base sixteen (16 = 2⁴, fourth power of two)
duotrigesimal: base thirty-two (32 = 2⁵, fifth power of two)
tetrasexagesimal: base sixty-four (64 = 2⁶, sixth power of two)
centoctovigesimal: base 128 = 2⁷ (seventh power of two)
ducentohexaquinquagesimal: base 256 = 2⁸ (eighth power of two)
quingentoduodecimal: base 512 = 2⁹ (ninth power of two)
milletetravigesimal: base 1024 = 2¹⁰ (tenth power of two)
dumilloctoquadragesimal: base 2048 = 2¹¹ (eleventh power of two)
quadramillehexanonagesimal: base 4096 = 2¹² (twelfth power of two)

Note that bases 63 and higher include arbitrary characters for numerals (since the number of Hindu-Arabic numerals, plus Roman uppercase and Roman lowercase letters, equals 62 characters). Base 64 is presented here using the additional two characters of "-" (hyphen) and "_" (underscore) from the "URL- and Filename-Safe Base-64 Alphabet" of Internet Engineering Task Force (IETF) RFC 4648.

base 10	base 2	base 4	base 8	base 16	base 32	base 64
0	0	0	0	0	0	0
1	1	1	1	1	1	1
2	10	2	2	2	2	2
3	11	3	3	3	3	3
4	100	10	4	4	4	4
5	101	11	5	5	5	5
6	110	12	6	6	6	6
7	111	13	7	7	7	7
8	1000	20	10	8	8	8
9	1001	21	11	9	9	9
10	1010	22	12	A	A	A
11	1011	23	13	B	B	B
12	1100	30	14	C	C	C
13	1101	31	15	D	D	D
14	1110	32	16	E	E	E
15	1111	33	17	F	F	F
16	10000	100	20	10	G	G
17	10001	101	21	11	H	H
18	10010	102	22	12	I	I
19	10011	103	23	13	J	J
20	10100	110	24	14	K	K
21	10101	111	25	15	L	L
22	10110	112	26	16	M	M
23	10111	113	27	17	N	N
24	11000	120	30	18	O	O
25	11001	121	31	19	P	P
26	11010	122	32	1A	Q	Q
27	11011	123	33	1B	R	R
28	11100	130	34	1C	S	S
29	11101	131	35	1D	T	T
30	11110	132	36	1E	U	U
31	11111	133	37	1F	V	V
32	100000	200	40	20	10	W
33	100001	201	41	21	11	X
34	100010	202	42	22	12	Y
35	100011	203	43	23	13	Z
36	100100	210	44	24	14	a
37	100101	211	45	25	15	b
38	100110	212	46	26	16	c
39	100111	213	47	27	17	d
40	101000	220	50	28	18	e
41	101001	221	51	29	19	f
42	101010	222	52	2A	1A	g
43	101011	223	53	2B	1B	h
44	101100	230	54	2C	1C	i
45	101101	231	55	2D	1D	j
46	101110	232	56	2E	1E	k
47	101111	233	57	2F	1F	l
48	110000	300	60	30	1G	m
49	110001	301	61	31	1H	n
50	110010	302	62	32	1I	o
51	110011	303	63	33	1J	p
52	110100	310	64	34	1K	q
53	110101	311	65	35	1L	r
54	110110	312	66	36	1M	s
55	110111	313	67	37	1N	t
56	111000	320	70	38	1O	u
57	111001	321	71	39	1P	v
58	111010	322	72	3A	1Q	w
59	111011	323	73	3B	1R	x
60	111100	330	74	3C	1S	y
61	111101	331	75	3D	1T	z
62	111110	332	76	3E	1U	-
63	111111	333	77	3F	1V	_
64	1000000	1000	100	40	20	10
65	1000001	1001	101	41	21	11
66	1000010	1002	102	42	22	12
67	1000011	1003	103	43	23	13
68	1000100	1010	104	44	24	14
69	1000101	1011	105	45	25	15
70	1000110	1012	106	46	26	16
71	1000111	1013	107	47	27	17
72	1001000	1020	110	48	28	18
73	1001001	1021	111	49	29	19
74	1001010	1022	112	4A	2A	1A
75	1001011	1023	113	4B	2B	1B
76	1001100	1030	114	4C	2C	1C
77	1001101	1031	115	4D	2D	1D
78	1001110	1032	116	4E	2E	1E
79	1001111	1033	117	4F	2F	1F
80	1010000	1100	120	50	2G	1G
81	1010001	1101	121	51	2H	1H
82	1010010	1102	122	52	2I	1I
83	1010011	1103	123	53	2J	1J
84	1010100	1110	124	54	2K	1K
85	1010101	1111	125	55	2L	1L
86	1010110	1112	126	56	2M	1M
87	1010111	1113	127	57	2N	1N
88	1011000	1120	130	58	2O	1O
89	1011001	1121	131	59	2P	1P
90	1011010	1122	132	5A	2Q	1Q
91	1011011	1123	133	5B	2R	1R
92	1011100	1130	134	5C	2S	1S
93	1011101	1131	135	5D	2T	1T
94	1011110	1132	136	5E	2U	1U
95	1011111	1133	137	5F	2V	1V
96	1100000	1200	140	60	30	1W
97	1100001	1201	141	61	31	1X
98	1100010	1202	142	62	32	1Y
99	1100011	1203	143	63	33	1Z
100	1100100	1210	144	64	34	1a
101	1100101	1211	145	65	35	1b
102	1100110	1212	146	66	36	1c
103	1100111	1213	147	67	37	1d
104	1101000	1220	150	68	38	1e
105	1101001	1221	151	69	39	1f
106	1101010	1222	152	6A	3A	1g
107	1101011	1223	153	6B	3B	1h
108	1101100	1230	154	6C	3C	1i
109	1101101	1231	155	6D	3D	1j
110	1101110	1232	156	6E	3E	1k
111	1101111	1233	157	6F	3F	1l
112	1110000	1300	160	70	3G	1m
113	1110001	1301	161	71	3H	1n
114	1110010	1302	162	72	3I	1o
115	1110011	1303	163	73	3J	1p
116	1110100	1310	164	74	3K	1q
117	1110101	1311	165	75	3L	1r
118	1110110	1312	166	76	3M	1s
119	1110111	1313	167	77	3N	1t
120	1111000	1320	170	78	3O	1u
121	1111001	1321	171	79	3P	1v
122	1111010	1322	172	7A	3Q	1w
123	1111011	1323	173	7B	3R	1x
124	1111100	1330	174	7C	3S	1y
125	1111101	1331	175	7D	3T	1z
126	1111110	1332	176	7E	3U	1-
127	1111111	1333	177	7F	3V	1_
128	10000000	2000	200	80	40	20
129	10000001	2001	201	81	41	21
130	10000010	2002	202	82	42	22
131	10000011	2003	203	83	43	23
132	10000100	2010	204	84	44	24
133	10000101	2011	205	85	45	25
134	10000110	2012	206	86	46	26
135	10000111	2013	207	87	47	27
136	10001000	2020	210	88	48	28
137	10001001	2021	211	89	49	29
138	10001010	2022	212	8A	4A	2A
139	10001011	2023	213	8B	4B	2B
140	10001100	2030	214	8C	4C	2C
141	10001101	2031	215	8D	4D	2D
142	10001110	2032	216	8E	4E	2E
143	10001111	2033	217	8F	4F	2F
144	10010000	2100	220	90	4G	2G
145	10010001	2101	221	91	4H	2H
146	10010010	2102	222	92	4I	2I
147	10010011	2103	223	93	4J	2J
148	10010100	2110	224	94	4K	2K
149	10010101	2111	225	95	4L	2L
150	10010110	2112	226	96	4M	2M
151	10010111	2113	227	97	4N	2N
152	10011000	2120	230	98	4O	2O
153	10011001	2121	231	99	4P	2P
154	10011010	2122	232	9A	4Q	2Q
155	10011011	2123	233	9B	4R	2R
156	10011100	2130	234	9C	4S	2S
157	10011101	2131	235	9D	4T	2T
158	10011110	2132	236	9E	4U	2U
159	10011111	2133	237	9F	4V	2V
160	10100000	2200	240	A0	50	2W
161	10100001	2201	241	A1	51	2X
162	10100010	2202	242	A2	52	2Y
163	10100011	2203	243	A3	53	2Z
164	10100100	2210	244	A4	54	2a
165	10100101	2211	245	A5	55	2b
166	10100110	2212	246	A6	56	2c
167	10100111	2213	247	A7	57	2d
168	10101000	2220	250	A8	58	2e
169	10101001	2221	251	A9	59	2f
170	10101010	2222	252	AA	5A	2g
171	10101011	2223	253	AB	5B	2h
172	10101100	2230	254	AC	5C	2i
173	10101101	2231	255	AD	5D	2j
174	10101110	2232	256	AE	5E	2k
175	10101111	2233	257	AF	5F	2l
176	10110000	2300	260	B0	5G	2m
177	10110001	2301	261	B1	5H	2n
178	10110010	2302	262	B2	5I	2o
179	10110011	2303	263	B3	5J	2p
180	10110100	2310	264	B4	5K	2q
181	10110101	2311	265	B5	5L	2r
182	10110110	2312	266	B6	5M	2s
183	10110111	2313	267	B7	5N	2t
184	10111000	2320	270	B8	5O	2u
185	10111001	2321	271	B9	5P	2v
186	10111010	2322	272	BA	5Q	2w
187	10111011	2323	273	BB	5R	2x
188	10111100	2330	274	BC	5S	2y
189	10111101	2331	275	BD	5T	2z
190	10111110	2332	276	BE	5U	2-
191	10111111	2333	277	BF	5V	2_
192	11000000	3000	300	C0	60	30
193	11000001	3001	301	C1	61	31
194	11000010	3002	302	C2	62	32
195	11000011	3003	303	C3	63	33
196	11000100	3010	304	C4	64	34
197	11000101	3011	305	C5	65	35
198	11000110	3012	306	C6	66	36
199	11000111	3013	307	C7	67	37
200	11001000	3020	310	C8	68	38
201	11001001	3021	311	C9	69	39
202	11001010	3022	312	CA	6A	3A
203	11001011	3023	313	CB	6B	3B
204	11001100	3030	314	CC	6C	3C
205	11001101	3031	315	CD	6D	3D
206	11001110	3032	316	CE	6E	3E
207	11001111	3033	317	CF	6F	3F
208	11010000	3100	320	D0	6G	3G
209	11010001	3101	321	D1	6H	3H
210	11010010	3102	322	D2	6I	3I
211	11010011	3103	323	D3	6J	3J
212	11010100	3110	324	D4	6K	3K
213	11010101	3111	325	D5	6L	3L
214	11010110	3112	326	D6	6M	3M
215	11010111	3113	327	D7	6N	3N
216	11011000	3120	330	D8	6O	3O
217	11011001	3121	331	D9	6P	3P
218	11011010	3122	332	DA	6Q	3Q
219	11011011	3123	333	DB	6R	3R
220	11011100	3130	334	DC	6S	3S
221	11011101	3131	335	DD	6T	3T
222	11011110	3132	336	DE	6U	3U
223	11011111	3133	337	DF	6V	3V
224	11100000	3200	340	E0	70	3W
225	11100001	3201	341	E1	71	3X
226	11100010	3202	342	E2	72	3Y
227	11100011	3203	343	E3	73	3Z
228	11100100	3210	344	E4	74	3a
229	11100101	3211	345	E5	75	3b
230	11100110	3212	346	E6	76	3c
231	11100111	3213	347	E7	77	3d
232	11101000	3220	350	E8	78	3e
233	11101001	3221	351	E9	79	3f
234	11101010	3222	352	EA	7A	3g
235	11101011	3223	353	EB	7B	3h
236	11101100	3230	354	EC	7C	3i
237	11101101	3231	355	ED	7D	3j
238	11101110	3232	356	EE	7E	3k
239	11101111	3233	357	EF	7F	3l
240	11110000	3300	360	F0	7G	3m
241	11110001	3301	361	F1	7H	3n
242	11110010	3302	362	F2	7I	3o
243	11110011	3303	363	F3	7J	3p
244	11110100	3310	364	F4	7K	3q
245	11110101	3311	365	F5	7L	3r
246	11110110	3312	366	F6	7M	3s
247	11110111	3313	367	F7	7N	3t
248	11111000	3320	370	F8	7O	3u
249	11111001	3321	371	F9	7P	3v
250	11111010	3322	372	FA	7Q	3w
251	11111011	3323	373	FB	7R	3x
252	11111100	3330	374	FC	7S	3y
253	11111101	3331	375	FD	7T	3z
254	11111110	3332	376	FE	7U	3-
255	11111111	3333	377	FF	7V	3_
256	100000000	10000	400	100	80	40

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