19² × 43 × 139

Prime Factor Structure

Factorization String 19^2 × 43 × 139

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 2,346,960

Proper Divisor Sum 189,263

Digit Sum / Digital Root 37 (Root: 1)

Adjacent Primes #2157679 ← → #2157709

1 19 43 139 361 817 2,641 5,977 15,523 50,179 113,563 2,157,697

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

2,157,697 6,473,092 3,236,546 1,618,273 4,854,820 2,427,410 1,213,705 3,641,116 1,820,558 910,279 2,730,838 1,365,419 4,096,258 2,048,129 6,144,388 3,072,194 1,536,097 4,608,292 2,304,146 1,152,073 3,456,220 1,728,110 864,055 2,592,166 1,296,083 3,888,250 1,944,125 5,832,376 2,916,188 1,458,094 729,047 2,187,142 1,093,571 3,280,714 1,640,357 4,921,072 2,460,536 1,230,268 615,134 307,567 922,702 461,351 1,384,054 692,027 2,076,082 1,038,041 3,114,124 1,557,062 778,531 2,335,594 1,167,797 3,503,392 1,751,696 875,848 437,924 218,962 109,481 328,444 164,222 82,111

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.