721,341

3² × 80149

Prime Factor Structure

Factorization String 3^2 × 80149

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Total Divisors 6

Divisor Sum (σ) 1,041,950

Proper Divisor Sum 320,609

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #721337 ← → #721351

1 3 9 80,149 240,447 721,341

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

721,341 2,164,024 1,082,012 541,006 270,503 811,510 405,755 1,217,266 608,633 1,825,900 912,950 456,475 1,369,426 684,713 2,054,140 1,027,070 513,535 1,540,606 770,303 2,310,910 1,155,455 3,466,366 1,733,183 5,199,550 2,599,775 7,799,326 3,899,663 11,698,990 5,849,495 17,548,486 8,774,243 26,322,730 13,161,365 39,484,096 19,742,048 9,871,024 4,935,512 2,467,756 1,233,878 616,939 1,850,818 925,409 2,776,228 1,388,114 694,057 2,082,172 1,041,086 520,543 1,561,630 780,815 2,342,446 1,171,223 3,513,670 1,756,835 5,270,506 2,635,253 7,905,760 3,952,880 1,976,440 988,220

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