λ
Sequence Observatory

2,974,792

23 × 19 × 19571
Deficient Even Composite

Starting at 2,974,792, the Collatz iteration reaches 1 after 138 steps. The first transition is 1487396; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2^3 × 19 × 19571
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 5,871,600
Proper Divisor Sum 2,896,808
Digit Sum / Digital Root 40 (Root: 4)
Adjacent Primes #2974789 ← → #2974799

Radix Representation

Decimal 2974792
Binary 1011010110010001001000 (22 bits)
Octal 0o13262110
Hexadecimal 0x2D6448

Divisor Catalog (16)

1 2 4 8 19 38 76 152 19,571 39,142 78,284 156,568 371,849 743,698 1,487,396 2,974,792

Collatz Trajectory (138 steps to reach 1)

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

2,974,792 1,487,396 743,698 371,849 1,115,548 557,774 278,887 836,662 418,331 1,254,994 627,497 1,882,492 941,246 470,623 1,411,870 705,935 2,117,806 1,058,903 3,176,710 1,588,355 4,765,066 2,382,533 7,147,600 3,573,800 1,786,900 893,450 446,725 1,340,176 670,088 335,044 167,522 83,761 251,284 125,642 62,821 188,464 94,232 47,116 23,558 11,779 35,338 17,669 53,008 26,504 13,252 6,626 3,313 9,940 4,970 2,485 7,456 3,728 1,864 932 466 233 700 350 175 526

More profiles

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