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2的10次幂是1024
2的20次幂等于2个2的10次幂相乘,拿计算器算一下就好了
1048567,一个奇数,说是2的20次方,真搞笑
2^1 | 2 |
| 3^1 | 3 |
| 4^1 | 4 |
| 5^1 | 5 | 2^2 | 4 |
| 3^2 | 9 |
| 4^2 | 16 |
| 5^2 | 25 | 2^3 | 8 |
| 3^3 | 27 |
| 4^3 | 64 |
| 5^3 | 125 | 2^4 | 16 |
| 3^4 | 81 |
| 4^4 | 256 |
| 5^4 | 625 | 2^5 | 32 |
| 3^5 | 243 |
| 4^5 | 1024 |
| 5^5 | 3125 | 2^6 | 64 |
| 3^6 | 729 |
| 4^6 | 4096 |
| 5^6 | 15625 | 2^7 | 128 |
| 3^7 | 2187 |
| 4^7 | 16384 |
| 5^7 | 78125 | 2^8 | 256 |
| 3^8 | 6561 |
| 4^8 | 65536 |
| 5^8 | 390625 | 2^9 | 512 |
| 3^9 | 19683 |
| 4^9 | 262144 |
| 5^9 | 1953125 | 2^10 | 1024 |
| 3^10 | 59049 |
| 4^10 | 1048576 |
| 5^10 | 9765625 | 2^11 | 2048 |
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| 2^12 | 4096 |
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| 2^13 | 8192 |
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| 2^14 | 16384 |
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| 2^15 | 32768 |
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| 2^16 | 65536 |
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| 2^17 | 131072 |
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| 2^18 | 262144 |
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| 2^19 | 524288 |
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| 2^20 | 1048576 |
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