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n
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n is prime n is composite
n is even n is odd
P Show primes FF Show fully factored numbers
PRP Show probable primes CF Show incompletely factored numbers
U Show numbers with unknown state C Show composites without known factors
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status (?) n digits number
FF 15 13 1000001000001<13> = 3 · 19 · 52579 · 333667
FF 18 16 3001000001000001<16> = 3 · 7 · 11 · 13 · 2963 · 3307 · 101987
FF 21 19 3003001000001000001<19> = 3^2 · 211 · 373 · 66037 · 64199899
FF 24 22 3003003001000001000001<22> = 3 · 7 · 11 · 13 · 71 · 367 · 881 · 130553 · 333667
20 numbers not shown. Reasons: 16 times Not divisible   4 times Negative  
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