λ
Sequence Observatory

2,947,576

23 × 368447
Deficient Even Composite

Starting at 2,947,576, the Collatz iteration reaches 1 after 319 steps. The first transition is 1473788; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2^3 × 368447
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 5,526,720
Proper Divisor Sum 2,579,144
Digit Sum / Digital Root 40 (Root: 4)
Adjacent Primes #2947561 ← → #2947583

Radix Representation

Decimal 2947576
Binary 1011001111100111111000 (22 bits)
Octal 0o13174770
Hexadecimal 0x2CF9F8

Divisor Catalog (8)

1 2 4 8 368,447 736,894 1,473,788 2,947,576

Collatz Trajectory (319 steps to reach 1)

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

2,947,576 1,473,788 736,894 368,447 1,105,342 552,671 1,658,014 829,007 2,487,022 1,243,511 3,730,534 1,865,267 5,595,802 2,797,901 8,393,704 4,196,852 2,098,426 1,049,213 3,147,640 1,573,820 786,910 393,455 1,180,366 590,183 1,770,550 885,275 2,655,826 1,327,913 3,983,740 1,991,870 995,935 2,987,806 1,493,903 4,481,710 2,240,855 6,722,566 3,361,283 10,083,850 5,041,925 15,125,776 7,562,888 3,781,444 1,890,722 945,361 2,836,084 1,418,042 709,021 2,127,064 1,063,532 531,766 265,883 797,650 398,825 1,196,476 598,238 299,119 897,358 448,679 1,346,038 673,019

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