There are 169 primes that are smaller than 1000.
There are 168 primes between 1 and 1000 and 1229 between 1 and 10,000.
There are 168 prime numbers under 1,000 . There are also 25 primes under 100, 62 primes under 300, and 95 primes under 500
There are 168 prime numbers less than 1,000.
25 of them.
25. any number in half equals how many twin primes. so 50/2 =25 EX.1-2 =1 1-10 = 5
Just 7. Any other number divisible by 7 isn't prime.
101
25 of them.
25 of them.
The only consecutive primes between 1 and 100 are 2 and 3.
There are 25 primes in 1-100.
All pairs of two primes are coprime. There are fifteen primes under 50. So that means there are 105 unique pairs of "coprime primes", or more generally, pairs of primes, under 50.
There are 9592 primes.
Of the 1,000 numbers from 1 to 1,000, 168 are primes and one (the number 1) is neither composite nor prime. Subtracting the 169 numbers that are not composites leaves 831 composuite numbers from 1 to 1,000 (1,000 - 169 = 831).
The twin primes (those with a difference of just 2) up to 1000, are as follows:3, 55, 711,1317, 1929, 3141, 4359, 6171, 73101, 103107, 109137, 139149, 151179, 181191, 193197, 199227, 229239, 241269, 271281, 283311, 313347, 349419, 421431, 433461, 463521, 523569, 571599, 601617, 619641, 643659, 661809, 811821, 823827, 829857, 859881, 883The first twin primes after 1000 are 1019 and 1021.
The primes between 1 and 10 are:2, 3, 5, 7The primes between 1 and 10 are:2, 3, 5, 7The primes between 1 and 10 are:2, 3, 5, 7The primes between 1 and 10 are:2, 3, 5, 7
There are only 2 primes in 80: 2 and 5.