Chen primes up to 2638
Chen primes: A prime number p is called a Chen prime if p + 2 is either a prime or semiprime.
There is 230 chen primes smaller than 2638.
List#
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 47, 53, 59, 67, 71, 83, 89, 101, 107, 109, 113, 127, 131, 137, 139, 149, 157, 167, 179, 181, 191, 197, 199, 211, 227, 233, 239, 251, 257, 263, 269, 281, 293, 307, 311, 317, 337, 347, 353, 359, 379, 389, 401, 409, 419, 431, 443, 449, 461, 467, 479, 487, 491, 499, 503, 509, 521, 541, 557, 563, 569, 571, 577, 587, 599, 617, 631, 641, 647, 653, 659, 677, 683, 701, 719, 743, 751, 761, 769, 787, 797, 809, 811, 821, 827, 829, 839, 857, 863, 877, 881, 887, 911, 919, 937, 941, 947, 953, 971, 977, 983, 991, 1009, 1019, 1031, 1039, 1049, 1061, 1091, 1097, 1109, 1117, 1151, 1163, 1187, 1193, 1201, 1217, 1229, 1259, 1277, 1283, 1289, 1291, 1297, 1301, 1319, 1327, 1361, 1367, 1381, 1399, 1409, 1427, 1439, 1451, 1459, 1471, 1481, 1487, 1499, 1511, 1553, 1559, 1567, 1583, 1601, 1607, 1619, 1621, 1637, 1667, 1669, 1697, 1709, 1721, 1733, 1759, 1777, 1787, 1801, 1847, 1871, 1877, 1889, 1901, 1907, 1913, 1931, 1949, 1979, 1997, 2003, 2017, 2027, 2029, 2039, 2069, 2081, 2087, 2099, 2111, 2129, 2141, 2153, 2179, 2207, 2213, 2237, 2243, 2251, 2267, 2269, 2281, 2309, 2333, 2339, 2351, 2357, 2381, 2389, 2393, 2411, 2417, 2441, 2447, 2459, 2467, 2477, 2531, 2543, 2549, 2557, 2579, 2591, 2609, 2621
Table#
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
---|---|---|---|---|---|---|---|---|---|---|
1 - 10 | 2 | 3 | 5 | 7 | 11 | 13 | 17 | 19 | 23 | 29 |
11 - 20 | 31 | 37 | 41 | 47 | 53 | 59 | 67 | 71 | 83 | 89 |
21 - 30 | 101 | 107 | 109 | 113 | 127 | 131 | 137 | 139 | 149 | 157 |
31 - 40 | 167 | 179 | 181 | 191 | 197 | 199 | 211 | 227 | 233 | 239 |
41 - 50 | 251 | 257 | 263 | 269 | 281 | 293 | 307 | 311 | 317 | 337 |
51 - 60 | 347 | 353 | 359 | 379 | 389 | 401 | 409 | 419 | 431 | 443 |
61 - 70 | 449 | 461 | 467 | 479 | 487 | 491 | 499 | 503 | 509 | 521 |
71 - 80 | 541 | 557 | 563 | 569 | 571 | 577 | 587 | 599 | 617 | 631 |
81 - 90 | 641 | 647 | 653 | 659 | 677 | 683 | 701 | 719 | 743 | 751 |
91 - 100 | 761 | 769 | 787 | 797 | 809 | 811 | 821 | 827 | 829 | 839 |
101 - 110 | 857 | 863 | 877 | 881 | 887 | 911 | 919 | 937 | 941 | 947 |
111 - 120 | 953 | 971 | 977 | 983 | 991 | 1009 | 1019 | 1031 | 1039 | 1049 |
121 - 130 | 1061 | 1091 | 1097 | 1109 | 1117 | 1151 | 1163 | 1187 | 1193 | 1201 |
131 - 140 | 1217 | 1229 | 1259 | 1277 | 1283 | 1289 | 1291 | 1297 | 1301 | 1319 |
141 - 150 | 1327 | 1361 | 1367 | 1381 | 1399 | 1409 | 1427 | 1439 | 1451 | 1459 |
151 - 160 | 1471 | 1481 | 1487 | 1499 | 1511 | 1553 | 1559 | 1567 | 1583 | 1601 |
161 - 170 | 1607 | 1619 | 1621 | 1637 | 1667 | 1669 | 1697 | 1709 | 1721 | 1733 |
171 - 180 | 1759 | 1777 | 1787 | 1801 | 1847 | 1871 | 1877 | 1889 | 1901 | 1907 |
181 - 190 | 1913 | 1931 | 1949 | 1979 | 1997 | 2003 | 2017 | 2027 | 2029 | 2039 |
191 - 200 | 2069 | 2081 | 2087 | 2099 | 2111 | 2129 | 2141 | 2153 | 2179 | 2207 |
201 - 210 | 2213 | 2237 | 2243 | 2251 | 2267 | 2269 | 2281 | 2309 | 2333 | 2339 |
211 - 220 | 2351 | 2357 | 2381 | 2389 | 2393 | 2411 | 2417 | 2441 | 2447 | 2459 |
221 - 230 | 2467 | 2477 | 2531 | 2543 | 2549 | 2557 | 2579 | 2591 | 2609 | 2621 |
Related#
- Learn more about Chen primes.
- All chen primes