7² × 13 × 17 × 19

Prime Factor Structure

Factorization String 7^2 × 13 × 17 × 19

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 287,280

Proper Divisor Sum 81,529

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #205721 ← → #205759

1 7 13 17 19 49 91 119 133 221 247 323 637 833 931 1,547 1,729 2,261 4,199 10,829 12,103 15,827 29,393 205,751

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

205,751 617,254 308,627 925,882 462,941 1,388,824 694,412 347,206 173,603 520,810 260,405 781,216 390,608 195,304 97,652 48,826 24,413 73,240 36,620 18,310 9,155 27,466 13,733 41,200 20,600 10,300 5,150 2,575 7,726 3,863 11,590 5,795 17,386 8,693 26,080 13,040 6,520 3,260 1,630 815 2,446 1,223 3,670 1,835 5,506 2,753 8,260 4,130 2,065 6,196 3,098 1,549 4,648 2,324 1,162 581 1,744 872 436 218

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