Primes Factors

Random Science or Numbers Quiz

Can you name the largest prime factor in each number?

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NumberLargest Prime Factor
153
167
197
201
187
209
131
203
181
189
123
NumberLargest Prime Factor
191
151
173
113
93
119
137
101
127
193
199
NumberLargest Prime Factor
149
163
117
159
107
129
179
139
143
177
97
NumberLargest Prime Factor
103
133
147
157
161
207
171
91
109
183
141

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