Which of the following is a prime number?
23882990
16769023
38377296
11723835
A prime number has no positive divisors other than 1 and itself. Hence, a prime bigger than 2 cannot be even. All prime numbers bigger than 5, written in the usual decimal system, end in 1, 3, 7, or 9.
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Answers by country
23882990
16769023
38377296
11723835
answers
the Netherlands
19
Malaysia
13
India
157
Unknown
22
the United States
249
Republic of Ireland
16
the United Kingdom
132
Australia
31
Germany
77
Poland
16236
Ghana
15
Austria
13
France
17
Canada
26
Greece
16
the Philippines
29
Spain
10
Pakistan
19