7 × 31 × 19991

Prime Factor Structure

Factorization String 7 × 31 × 19991

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 5,117,952

Proper Divisor Sum 779,905

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #4338041 ← → #4338073

1 7 31 217 19,991 139,937 619,721 4,338,047

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

4,338,047 13,014,142 6,507,071 19,521,214 9,760,607 29,281,822 14,640,911 43,922,734 21,961,367 65,884,102 32,942,051 98,826,154 49,413,077 148,239,232 74,119,616 37,059,808 18,529,904 9,264,952 4,632,476 2,316,238 1,158,119 3,474,358 1,737,179 5,211,538 2,605,769 7,817,308 3,908,654 1,954,327 5,862,982 2,931,491 8,794,474 4,397,237 13,191,712 6,595,856 3,297,928 1,648,964 824,482 412,241 1,236,724 618,362 309,181 927,544 463,772 231,886 115,943 347,830 173,915 521,746 260,873 782,620 391,310 195,655 586,966 293,483 880,450 440,225 1,320,676 660,338 330,169 990,508

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