There are 17 primes between 400 and 500. They are 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491 and 499.
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The 17 prime numbers between 400 and 500 are 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, and 499.
There are 95 Prime #'s between 1 and 500
The prime numbers between 500 and 600 are : 503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593 and 599.
There are 3 prime numbers between 70 and 80: 71 73 79.
The numbers below 500 having the most prime factors are 256 and 384 with eight prime factors each. Prime factorization is 256=2x2x2x2x2x2x2x2 and 84=2x2x2x2x2x2x2x3.