a-pointer 631 1801 9241 + 9930310867 aban 19 37 61 + 995074000207 Achilles 12172437058327 alt.fact. 19 alternating 61 127 169 + 985818769 amenable 37 61 169 + 999899377 apocalyptic 1141 1261 2269 + 29701 arithmetic 19 37 61 + 9997351 balanced p. 22447 35317 45757 + 9974545747 binomial 91 8911 873181 + 821574197731 brilliant 169 817 1027 + 998038081 c.decagonal 61 3781 234361 + 214426605350161 c.heptagonal 547 368551 248402701 + 112842888508351 c.nonagonal 91 8911 873181 + 80505887094361 c.octagonal 169 32761 6355441 + 46399815451081 c.pentagonal 331 159391 76825981 + 17848365484951 c.square 61 5941 582121 + 53670591396241 c.triangular 19 631 21421 + 32919051946411 Carmichael 8911 172081 7995169 + 50886982081 Chen 19 37 127 + 97179517 congruent 37 61 127 + 9997351 Cunningham 37 127 217 + 9994070595601 cyclic 19 37 61 + 9997351 d-powerful 4447 22447 23497 + 9682237 de Polignac 127 331 1657 + 99930637 decagonal 1387 42127 52204237 + 59665447746451 deceptive 91 3367 8911 + 97144387957 deficient 19 37 61 + 9997351 dig.balanced 19 37 169 + 199389769 Duffinian 169 217 469 + 9986401 economical 19 37 61 + 19945987 emirp 37 1657 3169 + 199145269 emirpimes 169 817 1027 + 99965269 equidigital 19 37 61 + 19945987 eRAP 176530075057 esthetic 1234567 evil 169 469 547 + 999789841 fibodiv 19 61 29107 Friedman 127 32761 166381 902557 frugal 32761 148519 1951327 + 680817481 gapful 3367 64387 90307 + 99963102421 good prime 37 127 331 + 169989769 happy 19 91 331 + 9975457 Harshad 1141 1387 3781 + 9936180151 heptagonal 469 3367 226051 + 181728138938347 hexagonal 91 8911 873181 + 80505887094361 hoax 5544721 6872047 31076227 + 93057991 Hogben 91 1261 17557 + 346332937450507 Honaker 126691 333667 436627 + 972162007 house 271 iban 127 217 271 + 724717 idoneal 37 inconsummate 4219 32137 115837 + 841111 interprime 217 7957 12871 + 99308287 junction 721 919 2107 + 99584647 katadrome 61 91 631 + 876421 Lehmer 91 1141 1261 + 980322013567 Lucas 3571 lucky 37 127 169 + 9975457 m-pointer 61 magic 14911 magnanimous 61 metadrome 19 37 127 + 1234567 modest 19 721 1027 + 1807002919 Moran 1141 1387 3781 + 92524087 Motzkin 127 nialpdrome 61 91 331 + 87766666663321 nonagonal 12871 486019 5847005269 220785839821 nude 1771777 oban 19 37 397 + 919 odious 19 37 61 + 999899377 Ormiston 2784997 2967091 3069397 + 1979851231 palindromic 919 1081801 1188811 + 131374494473131 palprime 919 pancake 37 631 3571 + 558119378907721 panconsummate 37 61 91 + 721 pandigital 19 2252467 3124261 + 13337317 pentagonal 7957 1185037 10596309577 1578130224697 pernicious 19 37 61 + 9953587 persistent 11342506897 13946150827 14528930617 + 97368012541 Pierpont 19 37 plaindrome 19 37 127 + 133333366666669 Poulet 1387 4681 7957 + 916540502502241 power 169 32761 6355441 + 46399815451081 powerful 169 32761 6355441 + 46399815451081 prime 19 37 61 + 999962694781 primeval 37 repfigit 19 61 repunit 91 127 1261 + 346332937450507 Ruth-Aaron 2107 65211679981 self 547 817 2437 + 998366419 self-describing 22154133413419 semiprime 91 169 217 + 99965269 sphenic 3367 4921 8911 + 99999907 square 169 32761 6355441 + 46399815451081 star 37 1261 42841 + 65838103892821 straight-line 1234567 strobogrammatic 1081801 1188811 strong prime 37 127 331 + 99896011 super-d 19 127 169 + 9964519 taxicab 195841 684019 5318677 + 980590370647771 triangular 91 8911 873181 + 80505887094361 truncatable prime 37 397 547 + 93626947 twin 19 61 271 + 995304031 uban 19 37 61 + 75000075000019 Ulam 1387 9577 9919 + 9975457 undulating 919 upside-down 19 37 91 wasteful 91 721 817 + 9997351 weak prime 19 61 271 + 98756719 weakly prime 4103337817 Wieferich 7651 Zeisel 353977 2268651612169 zygodrome 1188811 2200777 661166611 + 552299998822111