# Known prime factors of Googolplex − 1

1. Alpertron
2. Number Theory
3. Known prime factors of Googolplex − 1

1-digit prime factors: 2

2-digit prime factors: 4

3-digit prime factors: 10

4-digit prime factors: 8

5-digit prime factors: 18

6-digit prime factors: 11

7-digit prime factors: 20

8-digit prime factors: 16

9-digit prime factors: 25

10-digit prime factors: 23

11-digit prime factors: 31

12-digit prime factors: 33

13-digit prime factors: 26

14-digit prime factors: 37

15-digit prime factors: 33

16-digit prime factors: 22

17-digit prime factors: 30

18-digit prime factors: 30

19-digit prime factors: 30

20-digit prime factors: 39

21-digit prime factors: 31

22-digit prime factors: 29

23-digit prime factors: 24

24-digit prime factors: 29

25-digit prime factors: 27

26-digit prime factors: 39

27-digit prime factors: 27

28-digit prime factors: 30

29-digit prime factors: 28

30-digit prime factors: 25

31-digit prime factors: 30

32-digit prime factors: 36

33-digit prime factors: 26

34-digit prime factors: 31

35-digit prime factors: 41

36-digit prime factors: 40

37-digit prime factors: 35

38-digit prime factors: 31

39-digit prime factors: 26

40-digit prime factors: 30

41-digit prime factors: 28

42-digit prime factors: 29

43-digit prime factors: 33

44-digit prime factors: 29

45-digit prime factors: 31

46-digit prime factors: 28

47-digit prime factors: 12

48-digit prime factors: 21

49-digit prime factors: 32

50-digit prime factors: 22

51-digit prime factors: 17

52-digit prime factors: 18

53-digit prime factors: 23

54-digit prime factors: 13

55-digit prime factors: 18

56-digit prime factors: 15

57-digit prime factors: 12

58-digit prime factors: 25

59-digit prime factors: 17

60-digit prime factors: 17

61-digit prime factors: 17

62-digit prime factors: 23

63-digit prime factors: 14

64-digit prime factors: 18

65-digit prime factors: 27

66-digit prime factors: 16

67-digit prime factors: 19

68-digit prime factors: 18

69-digit prime factors: 13

70-digit prime factors: 13

71-digit prime factors: 17

72-digit prime factors: 18

73-digit prime factors: 15

74-digit prime factors: 16

75-digit prime factors: 14

76-digit prime factors: 12

77-digit prime factors: 14

78-digit prime factors: 17

79-digit prime factors: 18

80-digit prime factors: 14

81-digit prime factors: 10

82-digit prime factors: 13

83-digit prime factors: 6

84-digit prime factors: 15

85-digit prime factors: 15

86-digit prime factors: 7

87-digit prime factors: 10

88-digit prime factors: 8

89-digit prime factors: 6

90-digit prime factors: 2

91-digit prime factors: 4

92-digit prime factors: 4

93-digit prime factors: 4

94-digit prime factors: 3

95-digit prime factors: 4

96-digit prime factors: 4

97-digit prime factors: 3

98-digit prime factors: 2

99-digit prime factors: 4

104-digit prime factors: 1

105-digit prime factors: 1

106-digit prime factors: 1

116-digit prime factors: 1

128-digit prime factors: 1

225-digit prime factors: 1

Number of known prime numbers: 1966 (81317 digits)

Perl script written by Dario Alejandro Alpern. Last updated on May 25th, 2015.