Find largest left truncatable prime in a given base: Difference between revisions
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And, as one who can recall when one was admitted to the status of "prime" (like, being divisible only by itself and one), what about allowing numbers to end with the digit one... |
And, as one who can recall when one was admitted to the status of "prime" (like, being divisible only by itself and one), what about allowing numbers to end with the digit one... |
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<pre> |
<pre> |
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Working in bases 3 to 17 |
Working in bases 3 to 17 |
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Base Digits Count |
Base Digits Count Maximum Value = (in base) |
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3 2 1 |
3 2 1 7 = 2.1 |
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4 7 1 |
4 7 1 9829 = 2.1.2.1.2.1.1 |
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5 4 1 |
5 4 1 311 = 2.2.2.1 |
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6 19 1 |
6 19 1 580639005096133 = 5.4.1.4.5.2.5.5.1.3.1.5.5.1.3.1.4.2.1 |
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7 8 1 |
7 8 1 3602999 = 4.2.4.2.4.2.4.1 |
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8 9 1 |
8 9 1 104056657 = 6.1.4.7.4.3.5.2.1 |
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9 5 3 |
9 5 3 41023 = 6.2.2.4.1 |
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10 20 1 |
10 20 1 89726156799336363541 = 8.9.7.2.6.1.5.6.7.9.9.3.3.6.3.6.3.5.4.1 |
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11 7 1 |
11 7 1 11750399 = 6.6.10.6.2.8.1 |
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12 30 1 |
12 30 1 57434208867139354150297607357437 = 2.10.10.1.1.11.6.4.4.7.11.8.2.2.8.10.8.7.6.5.9.5.2.2.10.2.1.5.9.1 |
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13 10 1 |
13 10 1 66073331221 = 6.2.12.12.10.8.12.10.12.1 |
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14 25 1 |
14 25 1 39607537776359469390989456509 = 12.4.7.3.5.12.3.11.6.3.11.5.11.9.13.9.3.7.10.12.6.4.3.8.1 |
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15 20 4 |
15 20 4 319674182915416424428051 = 14.6.4.8.6.8.12.6.2.4.10.8.6.4.8.14.14.14.10.1 |
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16 23 2 |
16 23 2 2208955789035921681292672241 = 7.2.3.3.4.9.5.4.5.1.5.7.8.15.9.3.3.4.3.3.12.15.1 |
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17 11 2 |
17 11 2 16408729108033 = 8.2.6.4.4.6.14.2.12.6.1 |
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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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