factordbrpc · fdb
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Inverse home prime · Base 2 of 20 length 128 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
108 Fully factored 86 3400085565…62<86> 2×3×61×1665119734…11<20>×5579089047…87<64>
109 Fully factored 87 1053860124…62<87> 2×85505151079<11>×3538529533…59<13>×1741557722…71<63>
110 Fully factored 87 4210828193…02<87> 2×3×29×37×199×1583161×1420371317…03<33>×1461626797…37<43>
111 Fully factored 88 4172206948…66<88> 2×3×11×131×64538401×7770511967<10>×9622386033…63<66>
112 Fully factored 89 3635234663…14<89> 2×11×16223×2624148928…99<33>×3881415384…81<51>
113 Fully factored 90 1320777214…78<90> 2×199×14182583×51328769×98504995751<11>×1500965976…83<18>×2856193048…57<18>×1079477639…03<27>
114 Fully factored 91 1421028300…90<91> 2×5×1421028300…79<90>
115 Fully factored 91 4547290560…50<91> 2×3×53×13×277×673×43219573×595427058019<12>×1501790073…83<31>×6473437938…01<32>
116 Fully factored 93 8321930959…10<93> 2×5×79×408625277261<12>×1562164523…23<17>×8045097993…61<28>×2051226789…83<35>
117 Fully factored 94 8240485911…14<94> 2×23×29×107×5773154949…03<89>
118 Fully factored 95 3026795862…42<95> 2×34×17×181×1920881069<10>×24439831189<11>×396005056333<12>×1783911576…13<20>×1830913755…47<39>
119 Fully factored 97 1149283191…02<97> 2×740581×7800470289…23<17>×9947265426…77<73>
120 Fully factored 97 6012753004…94<97> 2×947×1283×560393711×91868873429<11>×1249620474…13<19>×3846156546…01<53>
121 Fully factored 99 1097883611…74<99> 2×7×409×3617×537532852093<12>×1017351448…99<22>×9693495879…71<58>
122 Fully factored 99 4222112923…94<99> 2×13×19×29×2947168032…69<95>
123 Fully factored 100 1931456041…46<100> 2×47×127×129698929×60527705599<11>×4103460368…29<14>×5022412845…13<63>
124 Fully factored 101 1068149081…54<101> 2×3×691×802546541×3210201892…39<88>
125 Fully factored 101 5647446893…38<101> 2×107×367×1087×85716599×1688140043<10>×4472769373…51<13>×1955482936…47<17>×5226835536…37<47>
126 Fully factored 103 2563232689…38<103> 2×32×29×647×63073×162277×5768454487…09<14>×1285444470…13<74>
127 Composite 104 3258988908…02<104> 2×72×353×4523×64333×3237588952…37<91>
↳ Open Open - the last known term is composite and not yet fully factored.
Open end - submit a factor of the remaining composite (91 digits) of term #127:
3237588952653507449873910752136011659581909629836441023863113694941639098004397123197186337
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 '20' --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":"20"},"type":12,"part":"last20","fr":0}}'