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Sequences
Sequence
Aliquot sequence
Home prime base 2
Home prime base 3
Home prime base 4
Home prime base 5
Home prime base 6
Home prime base 7
Home prime base 8
Home prime base 9
Home prime base 10
Home prime base 11
Home prime base 12
Home prime base 16
Inverse home prime base 2
Inverse home prime base 3
Inverse home prime base 4
Inverse home prime base 5
Inverse home prime base 6
Inverse home prime base 7
Inverse home prime base 8
Inverse home prime base 9
Inverse home prime base 10
Inverse home prime base 11
Greatest prime factor ^2+1
Greatest prime factor ^2+2
Greatest prime factor ^2-1
Greatest prime factor ^2-2
Greatest prime factor ^3+1
Greatest prime factor ^3-1
Silvester/Euclid sequence
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Show last 20 elements
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Status
n
Digits
Number
Checked
231
20
(show)
26248881200259326220
<20>
=
2^2
·
3^9
·
5
·
23
·
151
·
80677
·
237977
Checked
232
20
(show)
60601404333804181236
<20>
=
2^2
·
3^6
·
139
·
258329
·
578771591
Checked
233
20
(show)
99549091637362969164
<20>
=
2^2
·
3^2
·
67
·
41272426051974697
<17>
Checked
234
21
(show)
155844680772256462060
<21>
=
2^2
·
5
·
13489193
·
577664952871
<12>
Checked
235
21
(show)
171429173111976674996
<21>
=
2^2
·
101
·
304314551
·
1394378399
<10>
Checked
236
21
(show)
131542188501759760204
<21>
=
2^2
·
32885547125439940051
<20>
Checked
237
20
(show)
98656641376319820160
<20>
=
2^7
·
5
·
139
·
1109000015471221
<16>
Checked
238
21
(show)
138891161937615932240
<21>
=
2^4
·
5
·
11
·
43
·
79
·
4517
·
10285994827
<11>
Checked
239
21
(show)
226223591338242950320
<21>
=
2^4
·
5
·
11
·
257072262884366989
<18>
Checked
240
21
(show)
347561699419664171360
<21>
=
2^5
·
5
·
131
·
337
·
49205169578293
<14>
Checked
241
21
(show)
482276006332488237952
<21>
=
2^7
·
43
·
56431
·
1552742657723
<13>
Not all factors known
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