factordbrpc · fdb
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Inverse home prime · Base 2 of 144 length 72 Not fully computed yet - the last known term is composite. ↓ .elf file
Show sequence-development graph
Term size (digits) across the sequence
How the sequence develops - decimal digits of each term vs iteration.
nStatus DigitsTermFactorization
52 Fully factored 41 1690759355…34<41> 2×11×8578397×8958864688…01<32>
53 Fully factored 41 9619507711…78<41> 2×79×1751913652…59<19>×3475226083…99<21>
54 Fully factored 42 4102822793…02<42> 2×32×17×8599×1559241496…33<36>
55 Fully factored 43 5231946276…58<43> 2×577×4533748939…27<40>
56 Fully factored 44 1857023565…02<44> 2×669415723×6621935432…09<13>×2094626379…93<22>
57 Fully factored 44 7913274728…82<44> 2×32×11×13×43×59×223×239×2503×37811×3175811×7564684298…99<18>
58 Fully factored 46 3745850231…26<46> 2×32×174257×10898119×805196179×1360925714…51<24>
59 Fully factored 47 4113145586…82<47> 2×557017×9645665636…59<16>×3827748835…97<25>
60 Fully factored 48 2892165248…98<48> 2×139×2908487×264174170347<12>×1354006746…69<28>
61 Fully factored 49 1598529019…14<49> 2×19×4206655315…53<47>
62 Fully factored 49 5384518803…62<49> 2×80507023×3344129867…97<41>
63 Fully factored 50 1795366051…58<50> 2×72×23×127×1657×210685583×1796544791…21<33>
64 Fully factored 51 1035637562…90<51> 2×3×5×211×1318789×1240591404…87<41>
65 Fully factored 51 8525279213…86<51> 2×33×479×3761×56957×1538611232…23<39>
66 Fully factored 52 5413507009…90<52> 2×5×37×79×62791×2918963×2919209×171046021×3046750099<10>×664215337091<12>
67 Fully factored 54 2314452654…82<54> 2×131×181×766187×330202489×1929093658…67<35>
68 Fully factored 55 2846839760…90<55> 2×5×103×45293×339614221×1796837667…01<39>
69 Fully factored 56 2589515984…94<56> 2×283×4575116579…09<53>
70 Fully factored 56 9369838755…66<56> 2×53×199×89317×6264135567…21<15>×3020992728…19<16>×2628017301…83<17>
71 Composite 58 1144662973…98<58> 2×11×29×1747×10151×1011708091…93<48>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (48 digits) of term #71:
101170809103447003575689813037977407443336337393
Check for factors - let the server run a small P-1 / P+1 / ECM step on the composite:
level 0 done · takes up to a minute
From the command linefdb · curl
fdb
fdb seq view '144' --type 12 --part last20
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"sequence_view","params":{"start":{"expr":"144"},"type":12,"part":"last20","fr":0}}'