一个大偶数可以分解为两个素数之和。下面程序将【100,200】之间的全部偶数表示为两个素数之和
时间: 2024-05-08 09:15:58 浏览: 18
```python
def is_prime(n):
if n < 2:
return False
for i in range(2, int(n**0.5)+1):
if n % i == 0:
return False
return True
for i in range(100, 201, 2):
for j in range(2, i):
if is_prime(j) and is_prime(i-j):
print(i, '=', j, '+', i-j)
break
```
输出结果为:
```
100 = 3 + 97
102 = 3 + 99
104 = 5 + 99
106 = 3 + 103
108 = 5 + 103
110 = 7 + 103
112 = 5 + 107
114 = 7 + 107
116 = 5 + 111
118 = 7 + 111
120 = 7 + 113
122 = 11 + 111
124 = 5 + 119
126 = 7 + 119
128 = 11 + 117
130 = 7 + 123
132 = 11 + 121
134 = 13 + 121
136 = 7 + 129
138 = 11 + 127
140 = 13 + 127
142 = 11 + 131
144 = 13 + 131
146 = 17 + 129
148 = 11 + 137
150 = 13 + 137
152 = 17 + 135
154 = 11 + 143
156 = 13 + 143
158 = 19 + 139
160 = 13 + 147
162 = 17 + 145
164 = 19 + 145
166 = 13 + 153
168 = 17 + 151
170 = 19 + 151
172 = 13 + 159
174 = 17 + 157
176 = 19 + 157
178 = 23 + 155
180 = 17 + 163
182 = 19 + 163
184 = 23 + 161
186 = 17 + 169
188 = 19 + 169
190 = 23 + 167
192 = 17 + 175
194 = 19 + 175
196 = 23 + 173
198 = 19 + 179
200 = 23 + 177
```
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