The following table contains the log and antilog values that are used in GF(256) arithmetic, which is used for generating the error correction codes required for QR codes.
| Exponent of ɑ | Integer | Integer | Exponent of ɑ | |
|---|---|---|---|---|
| 0 | 1 | |||
| 1 | 2 | 1 | 0 | |
| 2 | 4 | 2 | 1 | |
| 3 | 8 | 3 | 25 | |
| 4 | 16 | 4 | 2 | |
| 5 | 32 | 5 | 50 | |
| 6 | 64 | 6 | 26 | |
| 7 | 128 | 7 | 198 | |
| 8 | 29 | 8 | 3 | |
| 9 | 58 | 9 | 223 | |
| 10 | 116 | 10 | 51 | |
| 11 | 232 | 11 | 238 | |
| 12 | 205 | 12 | 27 | |
| 13 | 135 | 13 | 104 | |
| 14 | 19 | 14 | 199 | |
| 15 | 38 | 15 | 75 | |
| 16 | 76 | 16 | 4 | |
| 17 | 152 | 17 | 100 | |
| 18 | 45 | 18 | 224 | |
| 19 | 90 | 19 | 14 | |
| 20 | 180 | 20 | 52 | |
| 21 | 117 | 21 | 141 | |
| 22 | 234 | 22 | 239 | |
| 23 | 201 | 23 | 129 | |
| 24 | 143 | 24 | 28 | |
| 25 | 3 | 25 | 193 | |
| 26 | 6 | 26 | 105 | |
| 27 | 12 | 27 | 248 | |
| 28 | 24 | 28 | 200 | |
| 29 | 48 | 29 | 8 | |
| 30 | 96 | 30 | 76 | |
| 31 | 192 | 31 | 113 | |
| 32 | 157 | 32 | 5 | |
| 33 | 39 | 33 | 138 | |
| 34 | 78 | 34 | 101 | |
| 35 | 156 | 35 | 47 | |
| 36 | 37 | 36 | 225 | |
| 37 | 74 | 37 | 36 | |
| 38 | 148 | 38 | 15 | |
| 39 | 53 | 39 | 33 | |
| 40 | 106 | 40 | 53 | |
| 41 | 212 | 41 | 147 | |
| 42 | 181 | 42 | 142 | |
| 43 | 119 | 43 | 218 | |
| 44 | 238 | 44 | 240 | |
| 45 | 193 | 45 | 18 | |
| 46 | 159 | 46 | 130 | |
| 47 | 35 | 47 | 69 | |
| 48 | 70 | 48 | 29 | |
| 49 | 140 | 49 | 181 | |
| 50 | 5 | 50 | 194 | |
| 51 | 10 | 51 | 125 | |
| 52 | 20 | 52 | 106 | |
| 53 | 40 | 53 | 39 | |
| 54 | 80 | 54 | 249 | |
| 55 | 160 | 55 | 185 | |
| 56 | 93 | 56 | 201 | |
| 57 | 186 | 57 | 154 | |
| 58 | 105 | 58 | 9 | |
| 59 | 210 | 59 | 120 | |
| 60 | 185 | 60 | 77 | |
| 61 | 111 | 61 | 228 | |
| 62 | 222 | 62 | 114 | |
| 63 | 161 | 63 | 166 | |
| 64 | 95 | 64 | 6 | |
| 65 | 190 | 65 | 191 | |
| 66 | 97 | 66 | 139 | |
| 67 | 194 | 67 | 98 | |
| 68 | 153 | 68 | 102 | |
| 69 | 47 | 69 | 221 | |
| 70 | 94 | 70 | 48 | |
| 71 | 188 | 71 | 253 | |
| 72 | 101 | 72 | 226 | |
| 73 | 202 | 73 | 152 | |
| 74 | 137 | 74 | 37 | |
| 75 | 15 | 75 | 179 | |
| 76 | 30 | 76 | 16 | |
| 77 | 60 | 77 | 145 | |
| 78 | 120 | 78 | 34 | |
| 79 | 240 | 79 | 136 | |
| 80 | 253 | 80 | 54 | |
| 81 | 231 | 81 | 208 | |
| 82 | 211 | 82 | 148 | |
| 83 | 187 | 83 | 206 | |
| 84 | 107 | 84 | 143 | |
| 85 | 214 | 85 | 150 | |
| 86 | 177 | 86 | 219 | |
| 87 | 127 | 87 | 189 | |
| 88 | 254 | 88 | 241 | |
| 89 | 225 | 89 | 210 | |
| 90 | 223 | 90 | 19 | |
| 91 | 163 | 91 | 92 | |
| 92 | 91 | 92 | 131 | |
| 93 | 182 | 93 | 56 | |
| 94 | 113 | 94 | 70 | |
| 95 | 226 | 95 | 64 | |
| 96 | 217 | 96 | 30 | |
| 97 | 175 | 97 | 66 | |
| 98 | 67 | 98 | 182 | |
| 99 | 134 | 99 | 163 | |
| 100 | 17 | 100 | 195 | |
| 101 | 34 | 101 | 72 | |
| 102 | 68 | 102 | 126 | |
| 103 | 136 | 103 | 110 | |
| 104 | 13 | 104 | 107 | |
| 105 | 26 | 105 | 58 | |
| 106 | 52 | 106 | 40 | |
| 107 | 104 | 107 | 84 | |
| 108 | 208 | 108 | 250 | |
| 109 | 189 | 109 | 133 | |
| 110 | 103 | 110 | 186 | |
| 111 | 206 | 111 | 61 | |
| 112 | 129 | 112 | 202 | |
| 113 | 31 | 113 | 94 | |
| 114 | 62 | 114 | 155 | |
| 115 | 124 | 115 | 159 | |
| 116 | 248 | 116 | 10 | |
| 117 | 237 | 117 | 21 | |
| 118 | 199 | 118 | 121 | |
| 119 | 147 | 119 | 43 | |
| 120 | 59 | 120 | 78 | |
| 121 | 118 | 121 | 212 | |
| 122 | 236 | 122 | 229 | |
| 123 | 197 | 123 | 172 | |
| 124 | 151 | 124 | 115 | |
| 125 | 51 | 125 | 243 | |
| 126 | 102 | 126 | 167 | |
| 127 | 204 | 127 | 87 | |
| 128 | 133 | 128 | 7 | |
| 129 | 23 | 129 | 112 | |
| 130 | 46 | 130 | 192 | |
| 131 | 92 | 131 | 247 | |
| 132 | 184 | 132 | 140 | |
| 133 | 109 | 133 | 128 | |
| 134 | 218 | 134 | 99 | |
| 135 | 169 | 135 | 13 | |
| 136 | 79 | 136 | 103 | |
| 137 | 158 | 137 | 74 | |
| 138 | 33 | 138 | 222 | |
| 139 | 66 | 139 | 237 | |
| 140 | 132 | 140 | 49 | |
| 141 | 21 | 141 | 197 | |
| 142 | 42 | 142 | 254 | |
| 143 | 84 | 143 | 24 | |
| 144 | 168 | 144 | 227 | |
| 145 | 77 | 145 | 165 | |
| 146 | 154 | 146 | 153 | |
| 147 | 41 | 147 | 119 | |
| 148 | 82 | 148 | 38 | |
| 149 | 164 | 149 | 184 | |
| 150 | 85 | 150 | 180 | |
| 151 | 170 | 151 | 124 | |
| 152 | 73 | 152 | 17 | |
| 153 | 146 | 153 | 68 | |
| 154 | 57 | 154 | 146 | |
| 155 | 114 | 155 | 217 | |
| 156 | 228 | 156 | 35 | |
| 157 | 213 | 157 | 32 | |
| 158 | 183 | 158 | 137 | |
| 159 | 115 | 159 | 46 | |
| 160 | 230 | 160 | 55 | |
| 161 | 209 | 161 | 63 | |
| 162 | 191 | 162 | 209 | |
| 163 | 99 | 163 | 91 | |
| 164 | 198 | 164 | 149 | |
| 165 | 145 | 165 | 188 | |
| 166 | 63 | 166 | 207 | |
| 167 | 126 | 167 | 205 | |
| 168 | 252 | 168 | 144 | |
| 169 | 229 | 169 | 135 | |
| 170 | 215 | 170 | 151 | |
| 171 | 179 | 171 | 178 | |
| 172 | 123 | 172 | 220 | |
| 173 | 246 | 173 | 252 | |
| 174 | 241 | 174 | 190 | |
| 175 | 255 | 175 | 97 | |
| 176 | 227 | 176 | 242 | |
| 177 | 219 | 177 | 86 | |
| 178 | 171 | 178 | 211 | |
| 179 | 75 | 179 | 171 | |
| 180 | 150 | 180 | 20 | |
| 181 | 49 | 181 | 42 | |
| 182 | 98 | 182 | 93 | |
| 183 | 196 | 183 | 158 | |
| 184 | 149 | 184 | 132 | |
| 185 | 55 | 185 | 60 | |
| 186 | 110 | 186 | 57 | |
| 187 | 220 | 187 | 83 | |
| 188 | 165 | 188 | 71 | |
| 189 | 87 | 189 | 109 | |
| 190 | 174 | 190 | 65 | |
| 191 | 65 | 191 | 162 | |
| 192 | 130 | 192 | 31 | |
| 193 | 25 | 193 | 45 | |
| 194 | 50 | 194 | 67 | |
| 195 | 100 | 195 | 216 | |
| 196 | 200 | 196 | 183 | |
| 197 | 141 | 197 | 123 | |
| 198 | 7 | 198 | 164 | |
| 199 | 14 | 199 | 118 | |
| 200 | 28 | 200 | 196 | |
| 201 | 56 | 201 | 23 | |
| 202 | 112 | 202 | 73 | |
| 203 | 224 | 203 | 236 | |
| 204 | 221 | 204 | 127 | |
| 205 | 167 | 205 | 12 | |
| 206 | 83 | 206 | 111 | |
| 207 | 166 | 207 | 246 | |
| 208 | 81 | 208 | 108 | |
| 209 | 162 | 209 | 161 | |
| 210 | 89 | 210 | 59 | |
| 211 | 178 | 211 | 82 | |
| 212 | 121 | 212 | 41 | |
| 213 | 242 | 213 | 157 | |
| 214 | 249 | 214 | 85 | |
| 215 | 239 | 215 | 170 | |
| 216 | 195 | 216 | 251 | |
| 217 | 155 | 217 | 96 | |
| 218 | 43 | 218 | 134 | |
| 219 | 86 | 219 | 177 | |
| 220 | 172 | 220 | 187 | |
| 221 | 69 | 221 | 204 | |
| 222 | 138 | 222 | 62 | |
| 223 | 9 | 223 | 90 | |
| 224 | 18 | 224 | 203 | |
| 225 | 36 | 225 | 89 | |
| 226 | 72 | 226 | 95 | |
| 227 | 144 | 227 | 176 | |
| 228 | 61 | 228 | 156 | |
| 229 | 122 | 229 | 169 | |
| 230 | 244 | 230 | 160 | |
| 231 | 245 | 231 | 81 | |
| 232 | 247 | 232 | 11 | |
| 233 | 243 | 233 | 245 | |
| 234 | 251 | 234 | 22 | |
| 235 | 235 | 235 | 235 | |
| 236 | 203 | 236 | 122 | |
| 237 | 139 | 237 | 117 | |
| 238 | 11 | 238 | 44 | |
| 239 | 22 | 239 | 215 | |
| 240 | 44 | 240 | 79 | |
| 241 | 88 | 241 | 174 | |
| 242 | 176 | 242 | 213 | |
| 243 | 125 | 243 | 233 | |
| 244 | 250 | 244 | 230 | |
| 245 | 233 | 245 | 231 | |
| 246 | 207 | 246 | 173 | |
| 247 | 131 | 247 | 232 | |
| 248 | 27 | 248 | 116 | |
| 249 | 54 | 249 | 214 | |
| 250 | 108 | 250 | 244 | |
| 251 | 216 | 251 | 234 | |
| 252 | 173 | 252 | 168 | |
| 253 | 71 | 253 | 80 | |
| 254 | 142 | 254 | 88 | |
| 255 | 1 | 255 | 175 |