1,290,572

2² × 17 × 18979

Starting at 1,290,572, the Collatz iteration reaches 1 after 186 steps. The first transition is 645286; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 17 × 18979

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 2,391,480

Proper Divisor Sum 1,100,908

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #1290571 ← → #1290581

Radix Representation

Decimal	1290572
Binary	100111011000101001100 (21 bits)
Octal	0o4730514
Hexadecimal	0x13B14C

Divisor Catalog (12)

1 2 4 17 34 68 18,979 37,958 75,916 322,643 645,286 1,290,572

Collatz Trajectory (186 steps to reach 1)

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

1,290,572 645,286 322,643 967,930 483,965 1,451,896 725,948 362,974 181,487 544,462 272,231 816,694 408,347 1,225,042 612,521 1,837,564 918,782 459,391 1,378,174 689,087 2,067,262 1,033,631 3,100,894 1,550,447 4,651,342 2,325,671 6,977,014 3,488,507 10,465,522 5,232,761 15,698,284 7,849,142 3,924,571 11,773,714 5,886,857 17,660,572 8,830,286 4,415,143 13,245,430 6,622,715 19,868,146 9,934,073 29,802,220 14,901,110 7,450,555 22,351,666 11,175,833 33,527,500 16,763,750 8,381,875 25,145,626 12,572,813 37,718,440 18,859,220 9,429,610 4,714,805 14,144,416 7,072,208 3,536,104 1,768,052

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