Find largest left truncatable prime in a given base: Difference between revisions
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And the results, slightly edited to remove |
And the results, slightly edited to remove six columns of spaces... |
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<pre> |
<pre> |
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Working in bases 3 to 17 there are 7 single-digit primes: 2, 3, 5, 7, 11, 13, 17 |
Working in bases 3 to 17 there are 7 single-digit primes: 2, 3, 5, 7, 11, 13, 17 |
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Base Digits Count |
Base Digits Count Maximum Value = (in base) |
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3 3 1 |
3 3 1 23 = 2.1.2 |
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4 6 3 |
4 6 3 4091 = 3.3.3.3.2.3 |
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5 6 1 |
5 6 1 7817 = 2.2.2.2.3.2 |
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6 17 1 |
6 17 1 4836525320399 = 1.4.1.4.1.5.1.1.4.1.4.4.5.1.4.3.5 |
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7 7 1 |
7 7 1 817337 = 6.6.4.2.6.2.3 |
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8 15 1 |
8 15 1 14005650767869 = 3.1.3.6.3.6.1.6.5.5.3.7.7.7.5 |
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9 10 3 |
9 10 3 1676456897 = 4.2.8.4.4.8.4.4.6.5 |
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10 24 1 |
10 24 1 357686312646216567629137 = 3.5.7.6.8.6.3.1.2.6.4.6.2.1.6.5.6.7.6.2.9.1.3.7 |
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11 9 1 |
11 9 1 2276005673 = 10.6.8.8.2.2.8.2.7 |
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12 32 1 |
12 32 1 13092430647736190817303130065827539 = 4.7.1.10.3.4.10.1.6.4.2.5.9.11.10.1.6.11.3.2.4.10.11.8.10.3.2.11.7.8.1.7 |
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13 8 4 |
13 8 4 812751503 = 12.12.4.12.8.12.6.5 |
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14 26 2 |
14 26 2 615419590422100474355767356763 = 13.9.6.7.12.12.13.6.3.3.8.8.5.2.2.6.1.9.8.8.3.10.7.13.2.3 |
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15 22 1 |
15 22 1 34068645705927662447286191 = 6.12.6.12.2.12.14.2.12.14.14.14.10.4.8.2.6.14.6.4.2.11 |
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16 25 1 |
16 25 1 1088303707153521644968345559987 = 13.11.12.7.15.11.10.2.4.15.14.6.10.14.12.4.6.2.10.11.15.6.3.11.3 |
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17 11 1 |
17 11 1 13563641583101 = 6.12.6.6.12.12.4.12.12.8.3 |
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The MR prime test makes a series of trials, stopping early |
The MR prime test makes a series of trials, stopping early |
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