|
Search: id:A074668
|
|
|
| A074668 |
|
Differences between successive 7-digit distinct-digit primes. |
|
+0
10
|
|
| 20, 210, 72, 88, 90, 410, 22, 200, 10, 104, 4, 86, 70, 104, 6, 24, 360, 136, 210, 56, 40, 50, 34, 24, 462, 80, 18, 22, 68, 36, 4, 6, 254, 6, 6, 84, 4, 512, 24, 6, 4, 56, 94, 50, 160, 584, 36, 6, 90, 10, 18, 50, 102, 204, 4, 510, 6, 14, 60, 16, 20, 60, 4, 6
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
EXAMPLE
|
a(1)=20 & a(2)=210 because first three 7-digit distinct-digit primes are 1023467, 1023487, 1023697 and differences between them are 20 and 210.
|
|
MATHEMATICA
|
a=1023451; b=a+8000; se7 = Select[Range[a, b, 2], Length[Union[IntegerDigits[ # ]]] == 7 && PrimeQ[ # ] & ]; Flatten[Table[{se7[[i+1]]-se7[[i]]}, {i, Length[se7]-1}]]
|
|
CROSSREFS
|
The seven-digit distinct-digit primes are in A074667.
Sequence in context: A121088 A133070 A135179 this_sequence A139620 A094311 A060853
Adjacent sequences: A074665 A074666 A074667 this_sequence A074669 A074670 A074671
|
|
KEYWORD
|
fini,nonn,base
|
|
AUTHOR
|
Zak Seidov (zakseidov(AT)yahoo.com), Aug 30 2002
|
|
|
Search completed in 0.002 seconds
|
