209,559

3 × 7 × 17 × 587

Prime Factor Structure

Factorization String 3 × 7 × 17 × 587

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 338,688

Proper Divisor Sum 129,129

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #209549 ← → #209563

1 3 7 17 21 51 119 357 587 1,761 4,109 9,979 12,327 29,937 69,853 209,559

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

209,559 628,678 314,339 943,018 471,509 1,414,528 707,264 353,632 176,816 88,408 44,204 22,102 11,051 33,154 16,577 49,732 24,866 12,433 37,300 18,650 9,325 27,976 13,988 6,994 3,497 10,492 5,246 2,623 7,870 3,935 11,806 5,903 17,710 8,855 26,566 13,283 39,850 19,925 59,776 29,888 14,944 7,472 3,736 1,868 934 467 1,402 701 2,104 1,052 526 263 790 395 1,186 593 1,780 890 445 1,336

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