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: 32
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: 43
36-digit prime factors: 41
37-digit prime factors: 35
38-digit prime factors: 32
39-digit prime factors: 30
40-digit prime factors: 32
41-digit prime factors: 35
42-digit prime factors: 33
43-digit prime factors: 39
44-digit prime factors: 35
45-digit prime factors: 33
46-digit prime factors: 31
47-digit prime factors: 15
48-digit prime factors: 25
49-digit prime factors: 39
50-digit prime factors: 28
51-digit prime factors: 22
52-digit prime factors: 22
53-digit prime factors: 29
54-digit prime factors: 17
55-digit prime factors: 21
56-digit prime factors: 22
57-digit prime factors: 18
58-digit prime factors: 32
59-digit prime factors: 21
60-digit prime factors: 25
61-digit prime factors: 24
62-digit prime factors: 34
63-digit prime factors: 25
64-digit prime factors: 26
65-digit prime factors: 42
66-digit prime factors: 27
67-digit prime factors: 25
68-digit prime factors: 32
69-digit prime factors: 21
70-digit prime factors: 20
71-digit prime factors: 26
72-digit prime factors: 26
73-digit prime factors: 28
74-digit prime factors: 24
75-digit prime factors: 23
76-digit prime factors: 19
77-digit prime factors: 23
78-digit prime factors: 24
79-digit prime factors: 29
80-digit prime factors: 20
81-digit prime factors: 18
82-digit prime factors: 30
83-digit prime factors: 22
84-digit prime factors: 31
85-digit prime factors: 27
86-digit prime factors: 18
87-digit prime factors: 19
88-digit prime factors: 18
89-digit prime factors: 15
90-digit prime factors: 15
91-digit prime factors: 17
92-digit prime factors: 16
93-digit prime factors: 24
94-digit prime factors: 17
95-digit prime factors: 23
96-digit prime factors: 15
97-digit prime factors: 17
98-digit prime factors: 17
99-digit prime factors: 18
100-digit prime factors: 12
101-digit prime factors: 18
102-digit prime factors: 14
103-digit prime factors: 23
104-digit prime factors: 15
105-digit prime factors: 22
106-digit prime factors: 14
107-digit prime factors: 16
108-digit prime factors: 15
109-digit prime factors: 19
110-digit prime factors: 20
111-digit prime factors: 14
112-digit prime factors: 24
113-digit prime factors: 19
114-digit prime factors: 14
115-digit prime factors: 12
116-digit prime factors: 21
117-digit prime factors: 20
118-digit prime factors: 14
119-digit prime factors: 9
120-digit prime factors: 14
121-digit prime factors: 19
122-digit prime factors: 20
123-digit prime factors: 11
124-digit prime factors: 12
125-digit prime factors: 18
126-digit prime factors: 13
127-digit prime factors: 22
128-digit prime factors: 18
129-digit prime factors: 23
130-digit prime factors: 22
131-digit prime factors: 16
132-digit prime factors: 14
133-digit prime factors: 15
134-digit prime factors: 18
135-digit prime factors: 18
136-digit prime factors: 20
137-digit prime factors: 13
138-digit prime factors: 21
139-digit prime factors: 14
140-digit prime factors: 26
141-digit prime factors: 15
142-digit prime factors: 15
143-digit prime factors: 9
144-digit prime factors: 17
145-digit prime factors: 16
146-digit prime factors: 20
147-digit prime factors: 18
148-digit prime factors: 19
149-digit prime factors: 16
150-digit prime factors: 20
151-digit prime factors: 15
152-digit prime factors: 14
153-digit prime factors: 25
154-digit prime factors: 14
155-digit prime factors: 15
156-digit prime factors: 15
157-digit prime factors: 13
158-digit prime factors: 17
159-digit prime factors: 18
160-digit prime factors: 20
161-digit prime factors: 19
162-digit prime factors: 19
163-digit prime factors: 15
164-digit prime factors: 12
165-digit prime factors: 14
166-digit prime factors: 16
167-digit prime factors: 20
168-digit prime factors: 18
169-digit prime factors: 24
170-digit prime factors: 12
171-digit prime factors: 19
172-digit prime factors: 15
173-digit prime factors: 12
174-digit prime factors: 22
175-digit prime factors: 12
176-digit prime factors: 18
177-digit prime factors: 22
178-digit prime factors: 14
179-digit prime factors: 22
180-digit prime factors: 19
181-digit prime factors: 15
182-digit prime factors: 8
183-digit prime factors: 17
184-digit prime factors: 19
185-digit prime factors: 16
186-digit prime factors: 17
187-digit prime factors: 11
188-digit prime factors: 21
189-digit prime factors: 16
190-digit prime factors: 13
191-digit prime factors: 20
192-digit prime factors: 23
193-digit prime factors: 15
194-digit prime factors: 10
195-digit prime factors: 24
196-digit prime factors: 16
197-digit prime factors: 13
198-digit prime factors: 16
199-digit prime factors: 16
200-digit prime factors: 8
201-digit prime factors: 12
202-digit prime factors: 15
203-digit prime factors: 16
204-digit prime factors: 19
205-digit prime factors: 13
206-digit prime factors: 12
207-digit prime factors: 17
208-digit prime factors: 15
209-digit prime factors: 6
210-digit prime factors: 19
211-digit prime factors: 12
212-digit prime factors: 11
213-digit prime factors: 12
214-digit prime factors: 18
215-digit prime factors: 12
216-digit prime factors: 10
217-digit prime factors: 13
218-digit prime factors: 12
219-digit prime factors: 19
220-digit prime factors: 10
221-digit prime factors: 15
222-digit prime factors: 10
223-digit prime factors: 12
224-digit prime factors: 18
225-digit prime factors: 18
226-digit prime factors: 11
227-digit prime factors: 18
228-digit prime factors: 11
229-digit prime factors: 6
230-digit prime factors: 15
231-digit prime factors: 14
232-digit prime factors: 21
233-digit prime factors: 9
234-digit prime factors: 11
235-digit prime factors: 13
236-digit prime factors: 13
237-digit prime factors: 4
238-digit prime factors: 11
239-digit prime factors: 6
240-digit prime factors: 13
241-digit prime factors: 10
242-digit prime factors: 7
243-digit prime factors: 6
244-digit prime factors: 8
245-digit prime factors: 14
246-digit prime factors: 8
247-digit prime factors: 10
248-digit prime factors: 8
249-digit prime factors: 12
250-digit prime factors: 5
251-digit prime factors: 5
252-digit prime factors: 12
253-digit prime factors: 11
254-digit prime factors: 9
255-digit prime factors: 5
256-digit prime factors: 8
257-digit prime factors: 12
258-digit prime factors: 13
259-digit prime factors: 11
260-digit prime factors: 9
261-digit prime factors: 7
262-digit prime factors: 11
263-digit prime factors: 10
264-digit prime factors: 9
265-digit prime factors: 11
266-digit prime factors: 8
267-digit prime factors: 6
268-digit prime factors: 9
269-digit prime factors: 8
270-digit prime factors: 12
271-digit prime factors: 12
272-digit prime factors: 13
273-digit prime factors: 7
274-digit prime factors: 2
275-digit prime factors: 10
276-digit prime factors: 11
277-digit prime factors: 8
278-digit prime factors: 6
279-digit prime factors: 4
280-digit prime factors: 4
281-digit prime factors: 12
282-digit prime factors: 6
283-digit prime factors: 3
284-digit prime factors: 5
285-digit prime factors: 2
286-digit prime factors: 2
287-digit prime factors: 4
288-digit prime factors: 6
289-digit prime factors: 4
290-digit prime factors: 5
291-digit prime factors: 6
292-digit prime factors: 6
293-digit prime factors: 3
294-digit prime factors: 6
295-digit prime factors: 4
296-digit prime factors: 5
297-digit prime factors: 7
298-digit prime factors: 3
299-digit prime factors: 8
300-digit prime factors: 13
301-digit prime factors: 5
302-digit prime factors: 4
303-digit prime factors: 5
304-digit prime factors: 3
305-digit prime factors: 6
306-digit prime factors: 9
307-digit prime factors: 1
308-digit prime factors: 7
309-digit prime factors: 6
310-digit prime factors: 10
311-digit prime factors: 6
312-digit prime factors: 7
313-digit prime factors: 6
314-digit prime factors: 3
315-digit prime factors: 2
316-digit prime factors: 6
317-digit prime factors: 3
318-digit prime factors: 4
319-digit prime factors: 7
320-digit prime factors: 6
321-digit prime factors: 6
322-digit prime factors: 1
323-digit prime factors: 6
324-digit prime factors: 3
325-digit prime factors: 7
326-digit prime factors: 2
327-digit prime factors: 5
328-digit prime factors: 2
329-digit prime factors: 2
330-digit prime factors: 8
331-digit prime factors: 4
332-digit prime factors: 3
333-digit prime factors: 2
334-digit prime factors: 2
335-digit prime factors: 5
336-digit prime factors: 5
337-digit prime factors: 2
338-digit prime factors: 1
339-digit prime factors: 5
340-digit prime factors: 5
341-digit prime factors: 1
342-digit prime factors: 6
343-digit prime factors: 3
344-digit prime factors: 4
345-digit prime factors: 2
346-digit prime factors: 5
347-digit prime factors: 4
348-digit prime factors: 4
349-digit prime factors: 6
351-digit prime factors: 3
352-digit prime factors: 2
354-digit prime factors: 4
355-digit prime factors: 3
356-digit prime factors: 3
357-digit prime factors: 4
358-digit prime factors: 3
359-digit prime factors: 3
360-digit prime factors: 2
361-digit prime factors: 1
362-digit prime factors: 3
363-digit prime factors: 4
364-digit prime factors: 4
365-digit prime factors: 4
366-digit prime factors: 2
367-digit prime factors: 2
368-digit prime factors: 1
369-digit prime factors: 1
370-digit prime factors: 4
371-digit prime factors: 1
372-digit prime factors: 3
374-digit prime factors: 1
375-digit prime factors: 2
379-digit prime factors: 2
380-digit prime factors: 1
381-digit prime factors: 2
382-digit prime factors: 2
383-digit prime factors: 2
385-digit prime factors: 4
389-digit prime factors: 1
394-digit prime factors: 2
397-digit prime factors: 2
399-digit prime factors: 1
400-digit prime factors: 1
403-digit prime factors: 1
413-digit prime factors: 1
Number of known prime numbers: 5482 (713016 digits)
Perl script written by Dario Alejandro Alpern. Last updated on May 5th, 2016.