λ
Sequence Observatory

908,220

22 × 3 × 5 × 15137
Abundant Even Composite

Starting at 908,220, the Collatz iteration reaches 1 after 201 steps. The first transition is 454110; the starting value is even with 24 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 3 × 5 × 15137
Distinct Prime Factors 4
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 24
Divisor Sum (σ) 2,543,184
Proper Divisor Sum 1,634,964
Digit Sum / Digital Root 21 (Root: 3)
Adjacent Primes #908213 ← → #908221

Radix Representation

Decimal 908220
Binary 11011101101110111100 (20 bits)
Octal 0o3355674
Hexadecimal 0xDDBBC

Divisor Catalog (24)

1 2 3 4 5 6 10 12 15 20 30 60 15,137 30,274 45,411 60,548 75,685 90,822 151,370 181,644 227,055 302,740 454,110 908,220

Collatz Trajectory (201 steps to reach 1)

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

908,220 454,110 227,055 681,166 340,583 1,021,750 510,875 1,532,626 766,313 2,298,940 1,149,470 574,735 1,724,206 862,103 2,586,310 1,293,155 3,879,466 1,939,733 5,819,200 2,909,600 1,454,800 727,400 363,700 181,850 90,925 272,776 136,388 68,194 34,097 102,292 51,146 25,573 76,720 38,360 19,180 9,590 4,795 14,386 7,193 21,580 10,790 5,395 16,186 8,093 24,280 12,140 6,070 3,035 9,106 4,553 13,660 6,830 3,415 10,246 5,123 15,370 7,685 23,056 11,528 5,764

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