factordbrpc · fdb
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Inverse home prime · Base 14 of 658 length 15 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
0 Fully factored 3 658 2×7×47
1 Fully factored 4 9312 25×3×97
2 Fully factored 9 732061206 2×33×37×366397
3 Fully factored 13 2758800832…48<13> 24×192×477631723
4 Fully factored 18 7048836697…86<18> 2×3×11×19×37×137×283799×390739
5 Fully factored 22 4341900298…12<22> 25×19×23×3104905819…93<18>
6 Fully factored 28 6415060440…02<28> 2×3×89×540840511×2221213380…23<17>
7 Fully factored 31 1259292767…72<31> 26×3×830561×4872293×1620766863…67<16>
8 Fully factored 37 9686195421…62<37> 2×60139×382332959×51030797663<11>×4127555617…37<13>
9 Fully factored 41 1326678803…72<41> 22×11×101×125803×25232366987<11>×9404652426…33<21>
10 Fully factored 44 7868708614…22<44> 2×3×11×41×306172597×9497501111…21<32>
11 Fully factored 47 7538306941…56<47> 24×967×26237×1857005477…29<39>
12 Fully factored 51 7520064702…86<51> 2×9689×22481×212801×6723766591…57<15>×1206453830…11<23>
13 Fully factored 54 1064063803…32<54> 26×2212576788…69<24>×7514314085…27<28>
14 Composite 59 6627447668…82<59> 2×43×547×1408836288…71<55>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (55 digits) of term #14:
1408836288579631838823191695931538676792835459879646971
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 '658' --type 64 --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":"658"},"type":64,"part":"last20","fr":0}}'