7 × 31 × 73 × 139

Prime Factor Structure

Factorization String 7 × 31 × 73 × 139

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 2,652,160

Proper Divisor Sum 450,261

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #2201897 ← → #2201911

1 7 31 73 139 217 511 973 2,263 4,309 10,147 15,841 30,163 71,029 314,557 2,201,899

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

2,201,899 6,605,698 3,302,849 9,908,548 4,954,274 2,477,137 7,431,412 3,715,706 1,857,853 5,573,560 2,786,780 1,393,390 696,695 2,090,086 1,045,043 3,135,130 1,567,565 4,702,696 2,351,348 1,175,674 587,837 1,763,512 881,756 440,878 220,439 661,318 330,659 991,978 495,989 1,487,968 743,984 371,992 185,996 92,998 46,499 139,498 69,749 209,248 104,624 52,312 26,156 13,078 6,539 19,618 9,809 29,428 14,714 7,357 22,072 11,036 5,518 2,759 8,278 4,139 12,418 6,209 18,628 9,314 4,657 13,972

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