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.

Sumit Tamang

Procsilas Moscas

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Malaysia

15%

76%

India

72%

158

Unknown

72%

22%

Republic of Ireland

11%

72%

11%

the Netherlands

71%

23%

the United States

70%

11%

257

the United Kingdom

10%

65%

10%

132

Australia

65%

12%

15%

Germany

12%

62%

15%

Poland

10%

61%

17%

16289

Ghana

11%

58%

29%

Austria

57%

21%

14%

Greece

22%

55%

16%

France

23%

52%

11%

Canada

23%

50%

15%

the Philippines

34%

48%

Spain

30%

10%

Pakistan

26%

31%

36%

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