trizen
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new file: oeis-research/Derek Orr/Least prime p such that p^n and p^n+1 have the same number of prime factors (counted with multiplicity) or 0 if no such number exists/simple_prog.sf
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il y a 1 an | |
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| .. | ||
| Number of positive integers with n digits that are the product of two integers ending with 3 | il y a 2 ans | |
| a(n) is the n-digit positive number with no trailing zeros and coprime to its digital reversal R(a(n)) at which abs(a(n) over R(a(n))-Pi) is minimized | il y a 1 an | |