2*(10^3-1)/9 + 7*(10^2+1)
*** VFYPR 1.13F  F_max=100000 S_min=100000 h=0 a=0 C=0 J=0 D=0 
N=(92*10^3-29)/99
N=929
*** N is prime!
Time: 0 sec
 
2*(10^7-1)/9 + 7*(10^6+1)
run"aprt-cle
Test number  N=? 9222229
Preparatory test
    Pass !
 9222229 is prime.
  0:00:00
OK
Proved prime with 'Ubasic - APRT-CLE.UB'
by Patrick De Geest using a Pentium III 650 MHz chip.
 
2*(10^13-1)/9 + 7*(10^12+1)
run"aprt-cle
Test number  N=? 2*(10^13-1)\9 + 7*(10^12+1)
Preparatory test
    Pass !
Main test  for P= 2
   for Q= 3    for Q= 5    for Q= 7    for Q= 13    for Q= 11 retry   for Q= 31
Main test  for P= 3
   for Q= 7    for Q= 13    for Q= 31
Main test  for P= 5
   for Q= 11    for Q= 31     Pass !
 9222222222229 is prime.
  0:00:00
OK
Proved prime with 'Ubasic - APRT-CLE.UB'
by Patrick De Geest using a Pentium III 650 MHz chip.
 
2*(10^111-1)/9 + 7*(10^110+1)
== ID:B2869034EA39C =============================================
PRIMO 1.2.1 - Primality Certificate
-----------------------------------------------------------------
Candidate
-----------------------------------------------------------------
N = 922222222222222222222222222222222222222222222222222222222222\
    222222222222222222222222222222222222222222222222229
Decimal size = 111
Binary size = 369
Started 01/26/2003 03:24:45 PM
Running time < 1s
Candidate certified prime
=================================================================
Proved prime with 'Primo 1.2.1'
by Patrick De Geest using a Pentium III 650 MHz chip.
 
2*(10^37785-1)/9 + 7*(10^37784+1)
3,5,7-PRP!
PFGW Version 20041020.Win_Stable (v1.2 RC1c) [FFT v23.8].
 
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Patrick De Geest - Belgium  - Short Bio - Some Pictures
 - Short Bio - Some Pictures
E-mail address : pdg@worldofnumbers.com