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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 13
Home prime base 14
Home prime base 15
Home prime base 16
Home prime base 17
Home prime base 18
Home prime base 19
Home prime base 20
Home prime base 21
Home prime base 22
Home prime base 23
Home prime base 24
Home prime base 25
Home prime base 26
Home prime base 27
Home prime base 28
Home prime base 29
Home prime base 30
Home prime base 31
Home prime base 32
Home prime base 33
Home prime base 34
Home prime base 35
Home prime base 36
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 whole sequence
Show last 20 elements
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Download .elf file
Status
n
Digits
Number
Checked
8
31
(show)
1468380747656744747661645430919
<31>
=
1033
·
2300279
·
26079257
·
23695322907281
<14>
Checked
9
28
(show)
1422167492246205896601766201
<28>
=
41
·
84777781469
<11>
·
409152155257669
<15>
Checked
10
26
(show)
34687012023192973055979599
<26>
=
43
·
2657
·
1355323
·
1409491
·
158928493
Checked
11
24
(show)
820084868550588808457905
<24>
=
5
·
23
·
61^2
·
239
·
541
·
9049
·
1637968457
<10>
Checked
12
24
(show)
230336324116293684726095
<24>
=
5
·
198391
·
232204408583346709
<18>
Checked
13
23
(show)
46068658049710238215825
<23>
=
5^2
·
807869
·
2280996451142957
<16>
Checked
14
23
(show)
11056548642820467647435
<23>
=
5
·
37
·
277873291
·
215080505161
<12>
Checked
15
22
(show)
2569900544459981145877
<22>
=
37
·
53
·
199
·
283
·
23270151501521
<14>
Checked
16
21
(show)
142319385587813433323
<21>
=
8089
·
25031
·
702895923397
<12>
Checked
17
17
(show)
23280616081340917
<17>
=
13
·
37
·
113
·
631
·
678799619
Checked
18
16
(show)
2737458390235403
<16>
=
181
·
15124079504063
<14>
Checked
19
14
(show)
15124079504245
<14>
=
5
·
29
·
31
·
421
·
7992031
Checked
20
13
(show)
4302312518795
<13>
=
5
·
227
·
1579
·
2400623
Checked
21
12
(show)
886492219765
<12>
=
5
·
177298443953
<12>
Checked
22
12
(show)
177298443959
<12>
=
7^2
·
13
·
278333507
Checked
23
11
(show)
44811695425
<11>
=
5^2
·
7
·
67
·
3821893
Checked
24
11
(show)
19640724991
<11>
=
29
·
317
·
2136487
Checked
25
9
(show)
741370529
=
29
·
25564501
Checked
26
8
(show)
25564531
=
347
·
73673
Checked
27
5
(show)
74021
=
74021
Prime
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