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3-powerful numbers = sum of two coprime 3-powerful numbers
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new file: "oeis-research/Felix Fr\303\266hlich/3-powerful numbers = sum of two coprime 3-powerful numbers/check.sf"
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%!s(int64=3) %!d(string=hai) anos |
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Both truncatable primes
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4d085c9032
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%!s(int64=3) %!d(string=hai) anos |
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Composite k such that binomial(2k, k) = 2 that are not squares or cubes of primes
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4d085c9032
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%!s(int64=3) %!d(string=hai) anos |
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Felix truncatable primes
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4d085c9032
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%!s(int64=3) %!d(string=hai) anos |
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Smallest base-n Fermat pseudoprime with n distinct prime factors
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df529e2f1d
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hai 1 ano |
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Square array A(n, k) read by antidiagonals downwards: smallest base-n Fermat pseudoprime with k distinct prime factors for k, n >= 2
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fc5a0aa028
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hai 7 meses |
trizen
fc5a0aa028
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