How many prime numbers are there?

less than googol
more than googol, but less the Graham's number
145443097811127
infinitely
The prime number is a natural number that can be divided, without a remainder, only by itself and by 1. For example, 5 can be divided only by 5 and by 1. There are infinitely many primes, as demonstrated by Euclid around 300 BC. The picture above shows the Ulam spiral, which is a graphical depiction of the set of prime numbers.
Ninjai
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Very interesting!
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Answers by country

less than googol
more than googol, but less the Graham's number
145443097811127
infinitely
answers
flagBelgium
10%
0%
0%
90%
10
flagGreece
0%
0%
15%
84%
13
flagCanada
0%
5%
5%
83%
18
flagAustria
6%
6%
2%
82%
79
flagthe Netherlands
4%
8%
4%
82%
23
flagGermany
4%
6%
6%
81%
488
flagFrance
7%
11%
0%
81%
27
flagPoland
6%
7%
5%
79%
5386
flagSwitzerland
8%
4%
6%
77%
45
flagAustralia
3%
10%
10%
75%
28
flagPakistan
13%
0%
13%
73%
15
flagthe United States
3%
13%
11%
70%
129
flagRepublic of Ireland
16%
5%
11%
66%
18
flagIndia
5%
15%
11%
65%
136
flagthe United Kingdom
12%
14%
11%
60%
103
flagGhana
0%
33%
0%
58%
12
flagNigeria
0%
18%
18%
54%
11