RosettaCodeData/Task/Extensible-prime-generator/Factor/extensible-prime-generator....

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285 B
Factor

USING: io math.primes prettyprint sequences ;
"First 20 primes: " write
20 nprimes .
"Primes between 100 and 150: " write
100 150 primes-between .
"Number of primes between 7,700 and 8,000: " write
7,700 8,000 primes-between length .
"10,000th prime: " write
10,000 nprimes last .