There are 73 of them. They're easy to find, though it does take some time.
You just sit right there and relax, and leave everything to me. I mean, why
should you put any effort into it!
503
509
521
523
541
547
557
563
569
571
577
587
593
599
601
607
613
617
619
631
641
643
647
653
659
661
673
677
683
691
701
709
719
727
733
739
743
751
757
761
769
773
787
797
809
811
821
823
827
829
839
853
857
859
863
877
881
883
887
907
911
919
929
937
941
947
953
967
971
977
983
991
997
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The prime numbers (factors) of 500 are: 2 and 5
13 prime numbers
There are 168 prime numbers under 1,000 . There are also 25 primes under 100, 62 primes under 300, and 95 primes under 500
They are in exponents: 23*53 = 1000
500