208,971

3² × 7 × 31 × 107

Prime Factor Structure

Factorization String 3^2 × 7 × 31 × 107

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 24

Divisor Sum (σ) 359,424

Proper Divisor Sum 150,453

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #208963 ← → #208991

1 3 7 9 21 31 63 93 107 217 279 321 651 749 963 1,953 2,247 3,317 6,741 9,951 23,219 29,853 69,657 208,971

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

208,971 626,914 313,457 940,372 470,186 235,093 705,280 352,640 176,320 88,160 44,080 22,040 11,020 5,510 2,755 8,266 4,133 12,400 6,200 3,100 1,550 775 2,326 1,163 3,490 1,745 5,236 2,618 1,309 3,928 1,964 982 491 1,474 737 2,212 1,106 553 1,660 830 415 1,246 623 1,870 935 2,806 1,403 4,210 2,105 6,316 3,158 1,579 4,738 2,369 7,108 3,554 1,777 5,332 2,666 1,333

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