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Primes:
Primes obtained from 1397 with inserting at most 20 zeros among digits of 1397.
13907
1000397
1003097
1003907
1039007
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100030000000000000000000900000000007
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1000000000000000000300000000090000007
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13975±6
1397×1398×1399×1400×1401±1
1397139813991400140114021403
31397+26=3454560821734027548301415200138996277997434296773355238315228063981035257839978333541801982239866058220932280651844097421608424784462337567938698395621736322365465016145359013481567426328798232400321376931796076396762417487367178615861006338640272072476996043756471990569870286851209223962632878790150566758103969623371563633326079310173754639755932970291894490797019624567690736330872981251540415177634208821903229348611794464616990826281543464534122928888598232275062265887778366115958683924119379473840840353139239279012326877403073123779560857546479995698712423714554671072906322082942416337906538458126792860734158560023291278906996927039891739037020997242566989
Factorizations:
Nice factorizations of 1397 with at most 791 zeros between 1 and 3.
1397=11×127
100397=11×9127
1000000397=11×90909127
100000000397=11×9090909127
Nice factorizations of 1397 with at most 121 zeros between 9 and 7.
1397=11×127
130097=11×11827
130000000097=11×11818181827
1300000000000000000000000000000000000000000000000097=11×118181818181818181818181818181818181818181818181827
Nice factorizations of 1397 with at most 1929 zeros between 3 and 9.
1397=11×127
139007=11×12637
139000000007=11×12636363637
1390000000000000000000000007=11×126363636363636363636363637
139000000000000000000000000000000007=11×12636363636363636363636363636363637
139000000000000000000000000000000000000000000000000007=11×12636363636363636363636363636363636363636363636363637
13900000000000000000000000000000000000000000000000000000000007=11×1263636363636363636363636363636363636363636363636363636363637
13900000000000000000000000000000000000000000000000000000000000000007=11×1263636363636363636363636363636363636363636363636363636363636363637
139000000000000000000000000000000000000000000000000000000000000000000000000007=11×12636363636363636363636363636363636363636363636363636363636363636363636363637
Digit Sums:
Sb(n) is the sum of digits of n in base b
S10(139797)=1397
S10(13977×97−2)=7×1397
S10(139746×97+81)=46×1397
S10(139761×97+82)=61×1397
S10(139786×97+61)=85×1397
S128(13971397)=97×1397
S1398(S1398(13971397))=1397
S1399(S1398(13971397))=1397
Euler Totient Function:
Integer Part:
[√59]=1397
[21327127]=1397
[5222323]=1397