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Here is a frequently asked question
at the Prime Pages :
I am working on an algorithm and need a few of the largest
primes with 64 bits. Where can I find them?
To which we answer "here!" Below, for each consecutive value of
n we give the ten least positive integers k such that 2n k
is a prime. In each case these are proven primes (proven using UBASIC 's
APRT-CL ). Note that
2n k will be an n bit number (for these
k 's).
Pages: 8-100 bits , 101-200
bits , 201-300 bits , 301-400
bits .
n ten least k 's for which 2n k is
prime.
101
69, 99, 213, 259, 363, 483, 493, 573, 619, 703
102
33, 63, 417, 447, 473, 483, 671, 681, 707, 801
103
97, 127, 237, 339, 441, 571, 619, 631, 697, 727
104
17, 29, 309, 369, 395, 587, 639, 657, 717, 857
105
13, 139, 151, 163, 231, 279, 313, 385, 469, 541
106
117, 407, 431, 593, 623, 717, 791, 813, 941, 965
107
1, 171, 321, 369, 441, 489, 721, 745, 919, 1077
108
59, 137, 227, 233, 269, 383, 467, 483, 545, 633
109
31, 91, 165, 399, 493, 735, 811, 943, 945, 1215
110
21, 135, 143, 195, 215, 443, 467, 531, 533, 623
111
37, 69, 175, 261, 429, 471, 487, 565, 765, 831
112
75, 189, 269, 297, 327, 519, 537, 623, 699, 875
113
133, 211, 463, 765, 831, 979, 1023, 1069, 1261, 1351
114
11, 35, 53, 75, 153, 161, 195, 227, 237, 257
115
67, 85, 97, 129, 277, 369, 379, 711, 865, 985
116
3, 69, 83, 89, 117, 197, 303, 353, 359, 429
117
279, 319, 373, 391, 451, 495, 541, 555, 685, 793
118
5, 111, 273, 375, 447, 497, 563, 593, 735, 741
119
69, 169, 231, 565, 745, 799, 801, 867, 871, 981
120
119, 395, 515, 555, 615, 765, 873, 899, 1049, 1143
121
73, 165, 225, 229, 433, 531, 565, 655, 685, 741
122
3, 113, 167, 203, 341, 825, 843, 951, 1011, 1085
123
67, 79, 135, 241, 471, 735, 847, 891, 1029, 1069
124
59, 99, 155, 165, 327, 389, 503, 563, 615, 719
125
9, 135, 385, 405, 415, 579, 633, 685, 853, 985
126
137, 203, 237, 261, 335, 341, 465, 663, 671, 783
127
1, 25, 39, 295, 309, 507, 511, 577, 697, 735
128
159, 173, 233, 237, 275, 357, 675, 713, 797, 1193
129
25, 315, 403, 613, 735, 741, 805, 1113, 1185, 1365
130
5, 27, 113, 173, 315, 417, 425, 447, 455, 585
131
69, 181, 271, 315, 385, 421, 427, 615, 625, 681
132
347, 363, 405, 465, 527, 585, 725, 735, 915, 923
133
99, 103, 183, 259, 453, 475, 631, 973, 1011, 1039
134
45, 117, 185, 197, 345, 495, 603, 695, 957, 1115
135
45, 55, 105, 205, 301, 409, 705, 795, 819, 915
136
113, 243, 257, 297, 299, 335, 365, 369, 377, 423
137
13, 33, 111, 231, 265, 303, 339, 421, 553, 555
138
105, 203, 237, 261, 297, 423, 513, 765, 983, 1071
139
187, 301, 397, 447, 517, 619, 837, 951, 997, 1245
140
27, 57, 77, 129, 147, 357, 623, 759, 773, 843
141
9, 103, 111, 165, 171, 193, 349, 523, 595, 625
142
111, 351, 365, 375, 453, 585, 885, 887, 1215, 1383
143
69, 127, 229, 351, 355, 381, 391, 465, 469, 471
144
83, 167, 279, 369, 377, 387, 395, 413, 425, 473
145
151, 295, 355, 453, 481, 501, 543, 783, 831, 973
146
153, 335, 573, 695, 1013, 1037, 1301, 1371, 1643, 1701
147
145, 325, 387, 427, 507, 615, 657, 915, 955, 1137
148
167, 197, 207, 347, 375, 585, 669, 675, 935, 1029
149
31, 33, 99, 199, 313, 381, 405, 433, 631, 679
150
3, 5 185, 713, 803, 905, 1173, 1175, 1193, 1293
151
195, 295, 309, 319, 445, 465, 517, 735, 775, 829
152
17, 23, 209, 233, 303, 539, 623, 707, 989, 1199
153
69, 145, 171, 399, 451, 553, 555, 639, 735, 885
154
243, 371, 393, 437, 675, 773, 795, 897, 1023, 1077
155
31, 49, 289, 381, 405, 441, 499, 511, 825, 867
156
143, 167, 173, 195, 587, 597, 609, 767, 1017, 1343
157
19, 133, 181, 213, 259, 333, 435, 451, 753, 861
158
15, 155, 213, 255, 321, 527, 621, 665, 731, 755
159
91, 241, 301, 441, 459, 475, 535, 651, 657, 777
160
47, 57, 75, 189, 285, 383, 465, 543, 659, 843
161
159, 399, 493, 685, 709, 765, 973, 1011, 1099, 1263
162
101, 317, 447, 627, 767, 861, 1077, 1095, 1113, 1197
163
55, 69, 577, 589, 621, 645, 759, 867, 915, 1111
164
63, 155, 485, 735, 779, 957, 1037, 1085, 1175, 1253
165
25, 61, 115, 271, 313, 361, 391, 501, 511, 699
166
5, 237, 633, 705, 753, 935, 1133, 1341, 1343, 1665
167
135, 471, 577, 591, 729, 771, 801, 1015, 1221, 1231
168
257, 585, 609, 633, 909, 1143, 1253, 1385, 1467, 1649
169
643, 675, 841, 973, 1011, 1131, 1201, 1203, 1251, 1275
170
143, 153, 195, 255, 357, 525, 605, 761, 825, 897
171
19, 187, 231, 649, 661, 669, 691, 831, 861, 1015
172
95, 155, 227, 525, 537, 629, 825, 855, 879, 927
173
55, 103, 303, 313, 343, 421, 441, 511, 531, 609
174
3, 17, 143, 153, 161, 215, 275, 411, 431, 465
175
229, 267, 727, 837, 847, 1039, 1069, 1089, 1107, 1299
176
233, 327, 359, 455, 495, 533, 563, 657, 743, 825
177
339, 609, 619, 819, 859, 873, 919, 1029, 1281, 1299
178
41, 305, 405, 557, 563, 827, 951, 1277, 1295, 1331
179
49, 159, 205, 381, 469, 471, 507, 639, 679, 687
180
47, 107, 189, 447, 569, 887, 929, 1287, 1547, 1823
181
165, 199, 271, 283, 399, 511, 675, 813, 825, 969
182
161, 233, 267, 281, 413, 605, 681, 755, 995, 1211
183
147, 319, 357, 609, 805, 945, 985, 1125, 1159, 1225
184
33, 59, 287, 309, 323, 963, 1145, 1187, 1203, 1233
185
303, 321, 339, 429, 651, 723, 789, 819, 915, 1029
186
371, 485, 677, 723, 773, 923, 1371, 1445, 1497, 1577
187
85, 105, 391, 477, 511, 589, 805, 861, 957, 1057
188
125, 143, 167, 173, 363, 705, 765, 855, 873, 1017
189
25, 301, 469, 583, 591, 711, 819, 921, 951, 973
190
11, 33, 95, 273, 651, 717, 851, 1083, 1163, 1251
191
19, 51, 69, 139, 201, 237, 325, 769, 771, 945
192
237, 333, 399, 489, 527, 663, 915, 945, 1059, 1143
193
31, 123, 423, 909, 1195, 1245, 1261, 1365, 1369, 1435
194
33, 75, 317, 393, 411, 705, 801, 987, 1185, 1191
195
135, 915, 975, 979, 1005, 1081, 1201, 1225, 1227, 1299
196
15, 47, 215, 459, 507, 533, 585, 663, 699, 885
197
75, 111, 169, 439, 775, 853, 1051, 1155, 1431, 1779
198
17, 45, 417, 485, 615, 627, 801, 1263, 1265, 1295
199
49, 189, 445, 459, 735, 909, 1021, 1065, 1707, 2047
200
75, 117, 285, 383, 387, 635, 827, 1275, 1307, 1317
