| | | 6.1 Powers of Two |
| n | 2n | Note |
| -2 | .25 | One quarter |
| -1 | .5 | One half |
| 0 | 1 | |
| 1 | 2 | One bit |
| 2 | 4 | |
| 3 | 8 | |
| 4 | 16 | |
| 5 | 32 | |
| 6 | 64 | |
| 7 | 128 | |
| 8 | 256 | 8 bits |
| 9 | 512 | |
| 10 | 1024 | About 103 = 1000 |
| 11 | 2048 | |
| 12 | 4096 | |
| 13 | 8192 | |
| 14 | 16384 | |
| 15 | 32768 | |
| 16 | 65536 | 16 bits |
| 20 | 1048576 | "Megabyte" |
| 30 | 1073741824 | "Gigabyte" |
| 32 | 4294967296 | IPV4 address |
| 40 | 1099511627776 | "Terabyte" |
| 48 | 281474976710656 | Ethernet MAC |
| 64 | 18446744073709551616 | |
| 128 | 340282366920938463463374607431768211456 | IPV6 address |
| | | 6.1 Powers of Two |